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MOTION
Quiz
Directions: Select the best answer.
formula:
velocity = x / t
acceleration = (vfinal - vinitial) / time
force = m x a
momentum = m x v
1. 10, 1 The attractive force, between the earth and a body.
A) force
B) distance
C) mass
D) weight
2. 10, 1 The acceleration of a body when it falls freely at the surface of the earth (about 9.8 meter/sec 2) or (32 ft/sec2)
is due to:
A) acceleration
B) acceleration due to gravity
C) average speed
D) distance
3. 10, 2 An airplane is observed to travel a distance of 300 miles in two hours without changing its rate of speed. What
is its speed?
A) 200 mi/hr
B) 175 mi/hr
C) 150 mi/hr
D) 195 mi/hr
4. 10, 2 If you drive your car at a steady speed covering 100 miles in 1.5 hours, what was your speed?
A) 46.2 mi/hr
B) 57.9 mi/hr
C) 66.7 mi/hr
D) 49.7 mi/hr
5. 10, 3 A mosquito flying at an incredible 10 meter/sec becomes blind and collides against a wall (zero speed) in a
matter of 1/2 sec. What is the deceleration of the mosquito during this tragic period of time?
A) 11 meter/sec2
B) 15 meter/sec2
C) 20 meter/sec2
D) 17 meter/sec2
6. 10, 3 What is the acceleration of a bird which is observed to change constantly its speed by 5 ft/sec every 4 seconds
of time:
A) 1.25 ft/sec2
B) 2.25 ft/sec2
C) 1.025 ft/sec2
D) 5.10 ft/sec2
7. 10, 4 What acceleration do you expect to impart to a block of mass 2.5 slugs resting on a frictionless plane if you
push it with a force of 20 lb.?
A) 8 ft/sec2
B) 5 ft/sec2
C) 9 ft/sec2
D) 11 ft/sec2
8. 10, 4 A 50 kilogram mass ball-bearing moves through a mark on the floor with an acceleration of 4 m/sec2. What
was the force (in Newton's) acting on the ball-bearing at that point?
A) 150 Newton's
B) 200 Newton's
C) 175 Newton's
D) 196 Newton's
9. 10.5 If a bird had a mass of .78 kg and a velocity of 2.2 meters per sec. and a mosquito had a mass of .0842 kg and a
velocity of 17.5 meters per sec. which would have the most momentum?
A) neither
B) mosquito
C) bird
D) they are equal
10. 10.6 Which of Newton's Laws Of Motion states "any body moving uniformly in a straight line or at rest will
remain in uniform motion or at rest, unless acted upon by some outside force"
A) Newton's second Law
B) Newton's first Law
C) Newton's third Law
D) Newton's forth Law
E) Does not apply to Newton's laws