Force part three

A child rides a wagon down a hill. Eventually, the wagon comes to a stop. Which is most responsible for causing the wagon to stop?

• gravity acting on the wagon
• the mass of the wagon
• friction acting on the wagon
• the mass of the child

Which best describes the force of gravity?

• a pushing force
• a pulling force
• a change in mass
• a change in speed

Two identical balls are pushed with the same force. One ball is pushed along a flat surface and the other ball is pushed down a slanted surface. Which ball will travel faster and why?

• the ball on the flat surface, because of increased friction
• the ball on the flat surface, because of decreased gravity
• the ball on the slanted surface, because of increased gravity
• the ball on the slanted surface, because of decreased friction

Sam is building a car to race down a ramp. The car weighs 100 grams. Which could Sam do to increase the speed of the car?

• increase the mass of the car
• decrease the mass of the car
• increase the friction on the ramp

What keeps the Moon orbiting Earth?

• the Sun’s gravity
• the Moon’s rotation
• Earth’s rotation
• Earth’s gravity

Which investigation will best test the effects of gravity on moving objects?

• pencils falling from the same height

• balloons floating upward from the same height

• a bicycle speeding up on a flat surface

• a ball slowing down on a flat surface

Michelle drove 300 miles in 6 hours. What was Michelle’s speed?
(speed = distance ÷ time)

• 30 miles per hour
• 50 miles per hour
• 60 miles per hour
• 80 miles per hour

Carey left a bowling ball and kickball outside on a windy day. Which best explains why the kickball moved but the bowling ball did not?

• The kickball has less mass so it was easier to move.

• The force of gravity acting on the bowling ball is greater.

• The mass of the kickball is greater so it is easier to move.

• The force of gravity acting on the kickball is greater.

Mr. Panico's favorite game in the universe

• World of Warcraft

• nope

• not it

• wrong answer

• whaaat? why did u pick this one?