Newton's Laws (2nd Quiz)

• A 5 kg box is pushed with a force of 20 N. What is its acceleration?

• 2 m/s²
• 10 m/s²
• 4 m/s²
• 8 m/s²

• A car with a mass of 1000 kg accelerates from rest to 5 m/s². What is the net force acting on it?

• 10000 N
• 7000 N
• 5000 N
• 3000 N

• A person pulls a 10 kg suitcase with a force of 50 N horizontally. Find the acceleration assuming no friction.

• 5 m/s²
• 2 m/s²
• 10 m/s²
• 0.5 m/s²

• A 1500 kg truck experiences a net force of 3000 N. What is its acceleration?

• 2 m/s²
• 4 m/s²
• 3 m/s²
• 1 m/s²

• A force of 25 N is applied to a 2.5 kg object to the right. What will be its velocity after 4 seconds if it starts from rest?

• 25 m/s
• 10 m/s
• 40 m/s
• 50 m/s

• A 50 kg person is in an elevator moving upward with an acceleration of 2 m/s². What is the force exerted by the floor on the person?

• 490 N
• 600 N
• 590.5 N
• 550 N

• A 3 kg ball is dropped from a height. Ignoring air resistance, what is the force acting on the ball due to gravity?

• 29.43 N
• 39.24 N
• 19.62 N
• 9.81 N

• A sled of mass 20 kg is pulled with a force of 100 N, but there is a friction force (it is pulling to opposite direction) of 30 N. What is the sled's acceleration?

• 2.0 m/s²
• 5.0 m/s²
• 1.5 m/s²
• 3.5 m/s²

1. A 600 kg race car accelerates from 0 to 30 m/s in 3 seconds. What is the force applied by the engine?

• 4500 N
• 3000 N
• 6000 N
• 7500 N

If an object is moving at a constant velocity, what can you say about the net force acting on it? (1st law)

• The net force is constantly changing.
• The net force is equal to the mass of the object.
• The net force is acting in the direction of motion.
• The net force acting on it is zero.