Forces Test

Question 1

Which law states that an object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by an unbalanced force?

Answer 1

Newton’s 1st Law

Question 2

A 4000 kg boat is speeding up at 4 m/s² down a 2000 m lake. What is the force exerted on the boat?

Answer 2

16,000 N

Question 3

Which law states that how much an object accelerates depends on the mass of the object and the force applied.

Answer 3

Newton’s 2nd Law

Question 4

Which law demonstrates the following: a bicycle tire pushes on the road and the road pushes back on the tire?

Answer 4

Newton’s 3rd Law

Question 5

Which law demonstrates the following: a skateboarder hits a rock and is thrown over it onto the ground?

Answer 5

Newton’s 1st Law

Question 6

Which law demonstrates the following: the magician quickly pulls the tablecloth from under a set of dishes and the dishes do not move?

Answer 6

Newton’s 1st Law

Question 7

It takes 180,000 N to stop a 4000 kg truck. What is the acceleration of the truck?

Answer 7

45 m/s2

Question 7

What is the vector sum of all forces acting on an object?

Answer 7

net force

Question 8

A car parked at the top of a hill does not move down the hill due to what type of friction?

Answer 8

Static Friction

Question 9

A 8100 kg truck is speeding up at 6 m/s². What is the force exerted on the truck?

Answer 9

48,600 N

Question 10

Which laws states for every action, there is an equal and opposite reaction.

Answer 10

Newton’s 3rd Law

Question 11

Which law explains why the planets resist a change of motion and continually orbit the sun?

Answer 11

Newton’s 1st Law

Question 12

Which law explains why a cannon moves backward as the cannonball shoots out?

Answer 12

Newton’s 3rd Law

Question 13

Choose which are non contact forces.

Answer 13

electrical force
magnetic force
gravitational force

Question 14

A person throws a box with a force of 375 N. If the box accelerates at 50 m/s², what is the box’s mass?

Answer 14

7.5 kg

Question 15

Which law demonstrates the following: the harder you hit a softball, the further the ball travels?

Answer 15

Newton’s 2nd Law

Question 16

What term is used to describe objects at rest or objects moving at a constant velocity?

Answer 16

equilibrium

Question 17

A skateboard coasts to a stop after landing at the bottom of a staircase on flat ground. What is the main type of friction slowed the skateboard down?

Answer 17

Rolling Friction

Question 18

What is the tendency of an object to resist change?

Answer 18

inertia

Question 19

A student pushes their backpack across a table. What is the main type of fiction is acting against the motion of the backpack?

Answer 19

Sliding Friction

Question 20

A tow truck pulls with a force of 8700 N and is speeding up at 3 m/s². What is the mass of the truck?

Answer 20

2,900 kg

Question 21

Which law explains why a soccer ball will stay where it landed until a person kicks it?

Answer 21

Newton’s 1st Law

Question 22

Which law is demonstrated in the following: It is easier to push a shopping cart that is empty rather than one that is full of groceries?

Answer 22

Newton’s 2nd Law

Question 23

Which law demonstrates the following: air is released from a balloon and the air pushes down and the balloon goes up?

Answer 23

Newton’s 3rd Law