there must also be a corresponding reaction force

To say there is no such thing as only one force means

unless the wall simultaneously exerts the same amount of force on you

You cannot exert a force on a wall

Floor

When you drop a rubber ball on the floor it bounces back. The force exerted on the ball to produce bouncing is by the

Exert on the boxer’s fist

When a boxer hits a punching bag, the strength of his punch depends on how much force the bag can

400N

A piece of rope is pulled by two people in a tug-of-war. Each exerts a 400-N force. What is the tension in the rope

The ground

The winner in a tug-o-war exerts the greatest force on

D) All of the Above

When a skateboarder pushes on a wall

pushes you to the right

When you walk, you push on the floor to the left and the floor

Always act simultaneously

Action and reaction pairs of forces

is equal in magnitude

For every action force, there must be a reaction force that

Arrows pushing against the bowstring

An archer shoots an arrow. Consider the action force to be the bowstring against the arrow. The reaction to this force is the

floor

The force that accelerates the orange and apple system featured in your textbook is actually supplied by the

must be a net force on the system

To produce an acceleration to a system there

helicopter blades and the air

The lift experienced by a helicopter involves an action-reaction pair of forces between the

1000 N

When a baseball player bats a ball with a force of 1000 N, the reaction force that the ball exerts against the bat is

Road

The force exerted on the tires of a car that directly accelerates it along the road is exerted by the

Only the force due to gravity acts on it

Neglecting air resistance, once a tossed ball leaves your hand

greater on the automobile

An automobile and a golf-cart traveling at the same speed collide head-on. The impact force is

Volkswagen

A mack truck and a Volkswagen traveling at the same speed have a head of collision. The vehicle that undergoes the greatest change in velocity will be the

the ball hits the racquet

When a tennis racquet hits a ball

Ball’s pull on the earth

As a ball falls, the action force is the earths pull on the ball. The reaction force is

Half the mass of the other

A pair of air pucks on an air table are set in motion, when a compressed spring between them is released. If one puck moves twice the speed of the other, then the mass is

500-N

Joshua is attracted toward Earth by a 500-N gravitational force. The earth is attracted toward Joshua with a force of

These two pulls comprise an action-reaction pair

Earth pulls on the moon, and the moon pulls on earth, which tells us

same on each

A pair of toy freight cars, one twice the mass of the other, fly apart when a compressed spring that joins them is released. The spring exerts the greater force on the

Both the same

When a cannonball is fired from a cannon, which undergoes the greater acceleration?

exert an upward force on the rocket

When a rocket forces exhaust gases downward, the exhaust gases

equals the speed of the falling drops

If vertically falling rain makes slanted 45° streaks on the side windows of a moving car, the speed of the car

5 units

A vertical vector of 3 units combined with a horizontal vector of of 4 units has a resultant of

√2 the length of either vector

Two equal-size vectors at right angles to each others have a resultant that is

horizontal surface

Nellie’s weight and normal force usually have the same magnitude when she stands on a

more than half her weight

When Nellie hangs suspended from a pair of ropes that are not vertical, the tension in each rope is

decreases as the slope of the ramp increases

The normal force that acts on a block of ice that slides on a ramp

D) All of the Above

As the sloped surface supporting a shoe becomes steeper

Have a vector sum of zero

When monkey mo is suspended as rest by holding a rope with one hand and the side of his cage with the other, all the forces vectors that act on him

remains constant

Nellie tosses a ball upwards at an angle. Neglecting air resistance, the horizontal component of the initial velocity

decreases with time to reach the top

Nellie tosses a ball upward at an angle. Neglecting air resistance, the vertical component of the initial velocity

100 km/h

An airplane travels at 141 km/h toward the northeast. What is its component of velocity due north

greater

A pair of equal length vectors at right angles to each other have a resultant. If the angle between the vectors is less than 90° their resultant is

100 s

A river 100m wide flows due south. A boat that goes 1 m/s relative to the water is pointed due east as it crosses from the west bank. The boat crosses in