Unit 4: Newton's Laws

A force perpendicular to any surface ________.

• normal force

• inertia

• tension

• weight

Always pulls down ________.

• normal force

• inertia

• tension

• weight

The tendency of an object to retain its state of motion _______.

• normal force

• inertia

• weight

• tension

Force due to a rope or string ______

• normal force

• inertia

• weight

• tension force

An object is initially in motion to the right. The forces on the object are shown in the free body diagram below. Which of the following best describes the motion of the object?

• it continues in motion to the right with constant velocity

• it continues in motion to the right and slows down

• it continues in motion to the right and speeds up

• it stops immediately

The weight of a teenager is 744 N. What is the child’s mass?

• 76 kg

• 80 kg

• 7291 kg

• 8022 kg

A 125 kg offensive lineman pushes a 100 kg defensive lineman with a force of 200 N. How much push force does the offensive lineman experience?

• 200 N

• 0 N

• 400 N

• 90 N

A 15.0 kg dog runs so that his acceleration is 2 m/s2, what is Net Force?

• 15 N

• 30 N

• 7.5 N

• 12 N

A child whose weight is 450 N on Earth travels to the Moon, where the acceleration due to gravity is only 1.60 m/s2 down.

What is the child's mass?

• 87 kg

• 55 kg

• 30 kg

• 46 kg

A child whose weight is 450 N on Earth travels to the Moon, where the acceleration due to gravity is only 1.60 m/s2 down. What would be the child's weight on the moon?

• 74 N

• 64 N

• 98 N

• 110 N