Forces

While playing hockey in gym class, Timmy is trying to send a plastic puck across the floor and into the goal. Which of the following best describes the forces acting on the plastic puck as it travels across the floor and into to the goal?

• electromagnetic and gravity

• gravity and friction

• mechanical force and friction

• magnetism and friction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A television satellite is orbiting at a constant distance around Earth. Which of the following statements best describes the impact of gravity on the Earth and the satellite?

• The Earth and the satellite do not have any gravitational pull because no objects in space have gravity.

• The gravitational pull of Earth and the satellite are the same because all objects in space have the same gravity.

• The gravitational pull of Earth is stronger than the gravitational pull of the satellite because larger objects in space have greater gravity.

• The gravitational pull of the satellite is stronger than the gravitational pull of the Earth because smaller objects in space have greater gravity.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

On Earth, a brick has a mass of 10 kg and a weight of 5 lbs. What predictions could we make about the mass and weight of the brick on the Moon, where there is less gravity?

• The mass of the brick would be less than 10 kg on the Moon.

• The weight of the brick could be less than 5lbs on the Moon.

• The mass of the brick would be greater than 10 kg on the Moon.

• The weight of the brick could be greater than 5lbs on the Moon.

Tags

NGSS.MS-PS2-4

Which has greatest gravitational force?

• Moon

• Earth

• Jupiter

• Sun

Tags

NGSS.MS-PS2-4

Adrian plays basketball with Kevin on a basketball court that is completely level. After Adrian makes a basket, their ball rolls to a complete stop. What forces acted on the ball to cause it to stop rolling?

• acceleration and gravity

• friction and acceleration

• gravity and friction

• magnetic forces and friction