Chapter 5

The resultant of a 30-N force and a 40-N force cannot possibly be

80 N

If action is a foot kicking a soccer ball, the reaction is an equal force on the

foot

When you jump vertically upward, strictly speaking, you cause Earth to

move downward

When Nellie Newton hangs by a pair of ropes at different angles to the vertical, the rope tension is greater in the rope that makes the

smallest angle to the vertical

A boulder falls due to gravity. The reaction to the force on the boulder is

the boulder pulling up on Earth

The force that propels a heavy truck along a highway is provided by

the highway pushing back on the wheels of the truck

Earth pulls on the Moon with a certain force. Relative to this force, the pull of the Moon on Earth is

the same

The amount of force with which a boxer's punch lands depends on the

mass of what's being hit

You run horizontally at 4 m/s in a vertically falling rain that falls at 4 m/s. Relative to you, the raindrops are falling at an angle of

45°

An axe is swung against a tree with a blow of 4000 N. The force that acts on the axe during this event is

4000 N

A massive truck and a golf cart have a head-on collision with equal amounts of force. The least amount of acceleration occurs for

at the truck

When the neck of an air-filled balloon is untied and air escapes, the balloon shoots through the air. The force that propels the balloon is provided by the

ejected air

Two identical carts have a compressed spring between them. When the spring is released, the carts recoil from each other with oppositely directed accelerations that are

equal

Horizontal and vertical components of velocity are equal when the projection angle is

equal to 45°.

When a squid pushes against water, the squid moves forward because the water

exerts a net forward force

Whenever one object exerts a force on a second object, the second object exerts a force on the first that

is opposite in direction. is equal in magnitude. occurs at the same time

The net force on a kicked soccer ball can be zero when

it is kicked by two feet with equal and opposite amounts of force

A mosquito has a collision with the windshield of a massive high-speed truck. The force of impact on the mosquito is______ the force on the truck, and the acceleration of the mosquito is________ the deceleration of the truck.

the same as; more than

A force is a push or pull that is required to change the

the state of motion of an object.

A force interaction requires at least

two forces