Calculating Forces & Newton's Laws Quiz

A truck moves with a constant force of 30 N applied to it. If the truck has a mass of 6 kg, what is its acceleration?

• 5 m/s^2

• 10 m/s^2

• 20 m/s^2

• 15 m/s^2

A 30-kg sled is being dragged across the snow with an acceleration of 1.5 m/s^2. What is the force exerted on the sled?

• 45 N

• 20 N

• 4.5 N

• 60 N

Find the net force on the car.

• 110 N to the right

• 670 N to the left

• 560 N to the right

• 285 N to the right

Three forces are acting on the box, as shown. What is the net force acting on the box?

• 80 N to the right

• 20 N to the right

• 140 N to the right

• 60 N to the left

If Nora drops a ball from a height, what is the rate at which it will accelerate toward the Earth due to GRAVITY?

• 1.6 m/s2

• 9.8 m/s2

• 1.0 m/s2

• It depends on the mass of the ball.

What is the SI unit for measuring the intensity of a force?

• Newton

• Joule

• Pascal

• Watt

A man bikes down a ramp. Which of the following forces are acting on the bike when it is half way down the ramp? (SELECT 3 ANSWERS)

• Friction
• Gravity
• Normal Force
• Applied Force

A man is pushing against a wall with his hands with a force of 100 N. With what force does the wall push back on the man?

• 10 N
• 100 N
• 1000 N
• 0 N

Wherever there is an action force, there must be a reaction force that

• is larger than the action force and acts in the same direction.
• is equal to the action force, but in the opposite direction.
• is equal to the action force and acts in the same direction.
• is smaller than the action force and acts in the opposite direction.

What happens to an object in motion when no external force is applied to it, according to Newton's First Law of Motion?

• It will change its direction.

• It will increase its speed.

• It will continue moving at a constant speed in a straight line.

• It will immediately come to rest.