Physics Practice Questions From Forces, Energy And Motion! Quiz

10 Questions | By R_martinez | Updated: Mar 20, 2022 | Attempts: 481

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Physics Practice Questions From Forces, Energy And Motion! Quiz - Quiz

Questions and Answers

1.

A wheeled cart is moving eastward at a speed of 1 meter per second when it is acted on by a 30-newton force to the north and a 30-newton force to the south. Which of the following BEST explains why the cart’s speed and direction stay the same?
- A.
  
  The new forces are perpendicular to the main force.
- B.
  
  The new forces are balanced.
- C.
  
  The new forces are smaller than the main force.
- D.
  
  The new forces are in opposite directions.
2.

Two dogs are pulling on opposite ends of a rope. The dog on the left is pulling with a force of 25 newtons. The dog on the right is pulling with a force of 60 newtons. What will be the resulting motion?
- A.
  
  The dogs will move toward the right.
- B.
  
  The dogs will move toward the left.
- C.
  
  The dogs will not move.
- D.
  
  Both dogs will move in the direction that they are pulling.
3.

A truck carrying a box is traveling 60 kilometers per hour. Suddenly, the truck brakes to a stop. Which choice best explains what will happen to the box?
- A.
  
  The box will slide off the back because for every action there is an equal and opposite reaction.
- B.
  
  The box will not move because objects at rest tend to stay at rest.
- C.
  
  The box will keep moving forward because objects in motion tend to stay in motion.
- D.
  
  The box will gain speed because, for objects of a given mass, greater force results in a greater acceleration.
4.

What part of Newton’s first law of motion is demonstrated when a magician pulls the tablecloth out from under a set of dishes?
- A.
  
  An object in motion will tend to be acted upon by an outside force.
- B.
  
  An object in motion tends to come to rest.
- C.
  
  An object in motion will tend to stay in motion.
- D.
  
  An object at rest will tend to stay at rest.
5.

Look at the illustrations. In the first, the truck is traveling 30 miles per hour. In the second, the truck has braked to a stop. Which of Newton’s laws of motion explains what happens next?
- A.
  
  For every action there is an equal and opposite reaction.
- B.
  
  Objects at rest tend to stay at rest.
- C.
  
  Objects in motion tend to stay in motion.
- D.
  
  For objects of a given mass, greater force results in a greater acceleration.
6.

The man who introduced the idea that all of the continents of the Earth were at one timejoined to make one large land mass was -
- A.
  
  Arthur Holmes
- B.
  
  Harry Hess
- C.
  
  John Dalton
- D.
  
  Alfred Wegener
7.

The most recently formed crust of the Earth would be found -
- A.
  
  Where plates moving sideways passed each other
- B.
  
  Where one plate is going under another plate
- C.
  
  Where two plates are pushing directly toward each other
- D.
  
  Where two plates are moving away from each other in opposite directions
8.

Which of these landforms would most likely be found at a divergent boundary?
- A.
  
  Volcanic island
- B.
  
  Mid-ocean ridge
- C.
  
  Fault line
- D.
  
  Mountain
9.

Which of these landforms is most likely to be found at a convergent boundary?
- A.
  
  Fault line
- B.
  
  Mountain
- C.
  
  Mid-ocean ridge
- D.
  
  Rift valley
10.

Martin gathered a toy car, a ramp, a stopwatch, a meter stick, and a variety of weights. What is he likely testing?
- A.
  
  How the angle of a ramp affects the speed of the car
- B.
  
  How friction affects the speed of the car
- C.
  
  How equal forces work on the placement of the car and the ramp
- D.
  
  How mass affects the speed of the car