Physics Unit 5 Test Review: Newtonian Physics

A bottle rocket launches with an impulse of 6.0 N·s over 0.40 s. The bottle rocket has a mass of 0.20 kg. What is the magnitude of the average force produced?

• 1.5 N
• 6.0 N
• 15 N
• 30 N

A 6.0‑kg box is initially at rest on a frictionless floor. A net force of 18 N acts on the box. What is the acceleration of the box?

• 0.33 m/s²
• 3.0 m/s²
• 6.0 m/s²
• 108 m/s²

A student pushes on a wall. How does the magnitude of the force exerted by the student on the wall compare to the magnitude of the force exerted by the wall on the student?

• The forces are equal in magnitude.
• The force from the wall is smaller.
• The wall exerts no force.
• The student exerts a greater force.

A cart on a frictionless surface is acted on by two forces. One force has a magnitude of 60 N, and the other has a magnitude of 20 N, both acting in the same direction. If the cart accelerates at 4.0 m/s², what is the mass of the cart?

• 5.0 kg
• 10 kg
• 15 kg
• 20 kg

A graph shows that a force of 3.0 N produces an acceleration of 1.5 m/s² for a particular object. What is the mass of the object?

• 0.50 kg
• 1.5 kg
• 2.0 kg
• 4.5 kg

What is the weight, to the nearest tenth of a newton, of a 3.0‑kg object on Earth?

• 9.8 N
• 9.6 N
• 29.4 N
• 58.8 N

Two blocks of mass 6.0 kg and 3.0 kg are on a frictionless surface. A force applied to the 6.0‑kg block gives it an acceleration of 4.0 m/s². What acceleration will the same force give the 3.0‑kg block?

• 2.0 m/s²
• 4.0 m/s²
• 6.0 m/s²
• 8.0 m/s²

A 0.160‑kg baseball moving at 20 m/s is brought to rest in 0.050 s. What is the magnitude of the average force exerted on the ball?

• 32 N
• 48 N
• 64 N
• 80 N

A 5.0‑kg block on a frictionless surface experiences two horizontal forces: 10 N to the right and 4.0 N to the left. What is the acceleration of the block?

• 1.2 m/s² to the left
• 1.2 m/s² to the right
• 2.8 m/s² to the left
• 2.8 m/s² to the right

A ball on a string is swung in a horizontal circular path at constant speed. To hit a target located outside the circle, at which point should the string be released?

• point A
• point B
• point C
• point D