Download ALL PHYSICS REVIEW SHEET NAME: 1. Change .0005 m to milli

ALL PHYSICS REVIEW SHEET
NAME:_____________________
1. Change .0005 m to millimeters
2. 6789 milligrams to pounds
3. How many seconds are there in 2.5 years?
4. At an average speed of 31km/h, how far will a dog travel in 195minutes?
5. If a car is going 85km/h and then accelerates at 17m/s2 to 145km/h how long will it take, and how far will it have
gone?
6. A car goes from 50m/s to rest in 24m. Find acceleration and the time required
7. A rock falls from a cliff and hits the ground 3.5s later. How high is the cliff and at what speed did it hit the ground
with?
8. A frog jumps straight up and is in the air for 7.5s. Find vi, height reached.
9. A rock is thrown up with a speed of 6m/s off a building 150m above the earth. How long does it take to hit and at
what speed?
10. A rock is thrown horizontally off a cliff 50m high at a velocity of 50m/s . Where will it land ? at what speed
vertically, horizontally? how much time would it take
11. If a marble rolls down a ramp off a table 6m high and hits the floor 3.4m away, where would you place a cup 1.6m
high to land the marble in the cup?
12. If you kick a football at a 39º with a velocity of 54m/s, where will it land? how high will it go? how long in the
air?
13. If a stoplight has a mass of 344kg and the cables holding it has a 123º what is the tension in the cable?
14. If a submarine dives at a 67º to the surface for 600m , how deep will it be beneath the surface?
15. If a dog pulls on a bone 49N 14º N of E and another one pulls 65 N 5º E of N what is the resultant force on the
bone?
16. If a force of 690N accelerates and object from rest to 78m/s in 1.5s, what is the mass of the object?
17. What force is needed to accelerate a 9g bullet from rest to 500m/s over a distance of .8m in a rifle?
18. How much work does a 189 lb man do to climb a ladder 56m high?
19. How far can a 5kg monkey fall if it does 60000j work and at what speed will it hit the ground?
20. How much work can a 5000w motor do in 1hr?
21. How long will it take a 1788watt motor to lift a 345kg mass 34m high?
22. What is the maximum force a 500kg elevator must support if it has to accelerate at 5m/s2
23. A 600 n painter stands 2m from one end of 8m long scaffold. If the scaffold is 800n and a 500 n pile of paint cans
is 2.3 m from the other end, what force must be exerted on each end of the scaffold to support it?
24. A 15m bar weighs 1234n. From end A a 234n weight is hung. At end B there is a weight of 456n. An 250 n
upward force is exerted 3m from B while an upward force of 789n is exerted 1.7m from A. Find the distance and the
force needed to balance the bar.( Assume the bar will be suspended from the middle)
25. If a truck 5000kg moving 45m/s collides head on with a car 3444kg moving 34m/s in the other direction, what will
their speed be?
26. If a crate 344kg slides 4m down a 46º ramp at a constant speed because of a man pushing back on it, find a) force
exerted by man b) work done by man on crate, c) work done by friction d) work done by gravity e) net work assume
µ = .35
27. Calculate the force of attraction between a 567kg object and a 3467kg object .005m apart
28. If the force between two objects is 89N and your double each mass and cut the distance between them to 1/8 what
is the new force
29. A ball 235g on a string is rotated vertically at a uniform speed at a radius of 78cm. If its speed is 23m/s, find a the
tension at the top and bottom
30. A helicopter 7890kg flies straight up accelerating .78m/s2 while lifting a 345kg mass. Find the lift force by the
blades and the tension in the cable
31. (Atwood’s Machine) If a 50kg box and a 30kg box are hung over a frictionless pulley by a 8m string, what is the
tension in the string and the acceleration of each box
32. A 50kg box is on a friction-less horizontal table connected to a 40kg mass hanging over the table edge on a pulley.
Find the tension in the cable and the acceleration of the system.
33. A box is pushed horizontally on a floor. How far will it go if µ = .37 and it initially has a speed of 6m/s
34.A man pushes a 100 kg mower at a uniform speed 120n along the handle which forms a 34º to the ground. Find the
retarding force by the mower, the normal force by the ground, the force the man must exert to accelerate the mower
from rest to 3.4m/s in 5s assume the same retarding force
35. If it takes 70N to stretch a rubber band 10cm, what speed would a 500g rock leave this sling if it was stretched
15cm? How high would it travel if fired straight up?
36.A box is pulled across a table top horizontally at a constant speed with a force of5. =.729. Find the mass of the
box
37. An 88.8 kg old lady moves down a wheel chair ramp at a constant speed. The ramp is 9m long and 4m in height.
Find 
38.A 45kg goat is pulled across a level floor at a constant speed by a rope that makes a 44 to the floor. The rope has a
tension of 357n. Find 
39.The coefficient of static friction between a 4kg box and the floor is .3. What is the maximum horizontal force that
can be applied to the carton before it slips?
40.At what minimum speed must a roller coaster travel when upside down in a loop so that the passengers don’t fall
out? (loop radius is 8m)
41.A. 5kg ball whirls on a 1.3m string horizontally. If the cord breaks at 250n, what is the maximum speed it can
swing at?
42.A .55kg barbie is swung vertically at constant speed by her .85m hair at 3.25m/s. What is the tension in her hair at
the top and bottom of her swing?
43.How large must the value of friction be if a car is to round a level curve of 56m at 80km/hr?
44. A 8kg rifle is used to fire a 50g bullet. If the bullet leaves the gun at 800m/s, what was the recoil velocity of the
gun?
45. Two cars are driving in the same direction. If the 2400kg car is going 15m/s and strikes the rear of the 3000kg
going 9m/s, what is the resulting speed?
46. A gun is fired vertically into a 4.4kg block of wood. If the bullet’s mass is 22g and has an initial speed of 340m/s,
how high will the block/bullet rise?
47.What is the speed of a wave with a given frequency of 2.5hz and a wavelength of .6m?
48.What is the wavelength of a water wave given f= .5 hz and v =4m/s?
49.A geologist’s simple pendulum, whose length is 37.1cm, has a frequency of .819hz at a certain location. What is
the acceleration due to gravity?
50.A pendulum makes 44 vibrations in 60s. What is its period and frequency?
51.Assuming two cars are driving towards each other on a 25C day. After they pass each other, one driver traveling
100km/hr beeps his horn (600hz) when he sees a deer on the road. What frequency does the other driver traveling
130km/hr in the opposite direction hear?
52.When a 70kg person gets into a 1200kg car, the car’s springs compress 2.2cm. What will be the frequency of
vibration when the car hits a bump?
53.A fisherman’s scale stretches 3.5cm when a 2.7kg fish hangs from it. What is the spring constant and what will be
the frequency is the fish is pulled down and released?
54.A small fly .8g is caught in a spider’s web and vibrates at 10hz. What is the spring constant? At what frequency
would it vibrate for an insect of .5 g?