Download Newton`s 1st, 2nd and 3rd LAW UNIT TEST REVIEW Newton`s First

Newton’s 1st, 2nd and 3rd LAW UNIT TEST REVIEW
Newton’s First Law
1) Define Newton’s First Law:
2) If a hockey puck is sliding across an icy surface, how much force is required to keep it moving at
constant speed?
3) A ball attached to a string is whirled around in a circular path far away from all gravitational or
frictional forces, when the string is cut describe the type of path the ball will follow?
4) The amount of inertia an object possesses is based solely on what?
5) A 5kg ball is sitting on the table… What is its mass? _____________ Weight? ____________
6) If you are in a weightless (meaning no gravity) environment, would it require a FORCE to set an
object in motion? Why or why not?
7) What is Newton’s First Law also known as?
8) If you rolled a ball on a straight frictionless surface, what would result?
9) An astronaut has a mass of 99kg and a weight of 970.2N. What is her mass if she moves up to
Mars?
10) Another astronaut has a mass of 56kg on Saturn, how much does he weigh on the Earth?
a. How much would he weight on Saturn if Saturns g=3.21m/s2?
11) If an object has twice as much mass as another object, the first object also has twice as much
what? (Velocity, speed, weight, mass, inertia, energy…etc)
Newton’s 1st, 2nd and 3rd LAW UNIT TEST REVIEW
12) Complete the following table:
Object
Mass
Melon
6kg
Orange
177kg
Computer
60kg
Mr. Sparks
Weight
Gravity
3.9N/kg
99N
9.4N/kg
3010N
5.8N/kg
Newton’s Second Law
13) What is Newton’s Second Law?
14) What 2 things does acceleration depend on?
15) The force of gravity on a person or object at the surface of the earth is known as what?
Math PRACTICE
16) What is the rate of acceleration of a 3450kg truck if a force of 10,000N is used to help it start
moving?
17) What is the mass of an object that is accelerating at 12.4m/s2 and has a force being applied of
344N?
18) What is the force on a 5000kg elevator that is falling freely with an acceleration of 9.8m/s2?
19) An object is accelerating at a rate of 39m/s2 when it suddenly has the net force upon it
decreased by 4. What is the objects new acceleration?
20) An object is accelerating at 12m/s2 while the net force increases by 3 and then the mass
increases by 3. What is the objects new acceleration?
Newton’s 1st, 2nd and 3rd LAW UNIT TEST REVIEW
Draw the free body diagrams for the following
21) A pencil is at rest on your desk.
22) A sled is coasting to the left and slowing down.
23) A rightward force is applied to a book move it at a constant speed across a table:
24) An applied force of 40N is used to accelerate a 10 kg object to the right across a frictional
surface. The object encounters 21N of friction.
What is the mass of the object? ___________
How much does this object weigh?____________
What is the net force (in what direction)? __________, ___________
What is the acceleration? ___________
If the mass of this object were doubled, what would happen to the acceleration? __________
Newton’s 1st, 2nd and 3rd LAW UNIT TEST REVIEW
Newton’s Third Law
25) What is the force of static friction?
What is the force of kinetic friction?
26) If a car and truck collide, is the same force applied from both objects? Is the damage done the
same to each object?
27) What is the action and reaction for a car driving down the road?
Action:
Reaction:
28) An interaction is composed of how many forces?
29) Forces are ______________ in strength but __________________ in direction.
30) Why can’t a 40N force be applied to a piece of paper?
31) If a baseball player hits a ball with a force of 1000N, the ball exerts a reaction force against the
bat of how much?