Force and Motion Review 1

Front

Examine the image of the forces acting on a cart. Which additional force can be applied to make the cart move in the opposite direction? (Think carefully about each option!!!)

Options:

60 N towards the west

,

40 N towards the west

,

40 N towards the east

,

60 N towards the east

Back

40 N towards the east

Front

John and his son are applying forces to move a box, as shown.

What are the magnitude and direction of the net force?

Options: 3 N towards the east, 3 N towards the west, 9 N towards the east, 9 N towards the west

Back

9 N towards the west

Front

A student applies forces to a cart. Which model accurately shows a cart that will remain stationary?

Back

Front

If John wins the tug-of-war game, what would likely be the combination of forces applied?

• Both John and Alex applied a force of 50 N each.
• John applied a force of 50 N, and Alex applied a force of 80 N.
• John applied a force of 100 N, and Alex applied a force of 40 N.

Back

John applied a force of 100 N, and Alex applied a force of 40 N.

Front

Net force acting on a skateboard with forces F1 and F2.

Back

55 N; in the same direction as force F1

Front

A student investigates how unbalanced forces affect the motion of an object. The student applies a force of 2 N to a toy car in the direction shown. The student wants to slow the motion of the car without causing it to stop or reverse direction. What force should the student apply to the toy car to achieve the desired result? Options: 1 N towards the left, 1 N towards the right, 2 N towards the right, 2 N towards the left.

Back

1 N towards the left

Front

What relationship exists between mass and inertia?

Back

As mass increases, inertia increases.

Front

A student claims that it is easier to stop Object 2 than to stop Objects 1 and 3. What justifies the student’s claim? Options: Object 2 has the least mass, so it has the least inertia. Object 2 has the least speed, so it requires the most force to stop. Object 2 is the slowest, so it experiences the least friction. Object 2 is the lightest, so it experiences the smallest gravitational force.

Back

Object 2 has the least mass, so it has the least inertia.

Front

Samantha pushes two identical wheelbarrows with the same force. One is loaded with bricks, and the other is empty. Which wheelbarrow will be most difficult to push?

Back

Wheelbarrow 1 since it has more mass and, therefore, more inertia

Front

How will the ball move when the train starts from rest and again when it stops?

Back

When the train starts moving, the ball will move to the left, and when the train stops moving, the ball will continue to move to the left.