Force & Motion

A student uses a magnet to move a 0.025 kg metal ball. The magnet exerts a force of 5N, which causes the ball to begin moving. What is the acceleration of the ball when it begins to move?

• 200 m/s²

• 0.125 m/s²

• 5 m/s²

• 5.025 m/s²

Tags

NGSS.MS-PS2-2

When a space shuttle was launched, the astronauts onboard experienced an acceleration of 29.0 m/s². If one of the astronauts had a mass of 60.0 kg, what net force in newtons did the astronaut experience?

• 1740 n

• 89 n

• 2.06 n

• .48 n

Tags

NGSS.MS-PS2-2

Engineers at the Johnson Space Center must determine the net force needed for a rocket to achieve an acceleration of 70 m/s². If the mass of the rocket is 45,000 kg, how much net force must the rocket develop?

• 3,150,000 Newtons

• 642.85 Newtons

• 315,000 Newtons

• 64.29 Newtons

Tags

NGSS.MS-PS2-2

What is the acceleration of softball if it has a mass of 0.5 kg and hits the catcher's glove with a force of 25 N?

• 5 m/s²

• 50 m/s²

• 12.5 m/s²

• 0.02 m/s²

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What is the mass of a truck (in kg) if it produces a force of 14,000 N while accelerating at a rate of 5m/s²?

• 2800 kg

• 70000 kg

• 14005 kg

• .0004 kg

Tags

NGSS.MS-PS2-2

The diagram shows a sled moving on a smooth, frictionless track. In which sections of the track would you expect the cart to be traveling at a constant speed?

• Sections 1 and 3

• Sections 2 and 3

• Sections 2 and 4

• Sections 3 and 4

Tags

NGSS.MS-PS3-1

The diagram shows a homemade car being pushed with a force of 25N. The force causes the car to move at a constant speed of 3 m/s. What will happen if the force is changed to 35N?

• The car will move at a constant speed of 13 m/s.

• The speed of the car will not change.

• The speed of the car will decrease to 1 m/s.

• The speed of the car will increase.

Tags

NGSS.MS-PS2-2

A student measures the speed of a cart as it rolls down a ramp. The student then records data in the table below. Which of these best explains the student's data?

• The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.

• The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.

• The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.

• The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.

Tags

NGSS.MS-PS2-2

Some students measure the acceleration of a wheeled cart being acted on by varying forces. The students record their data in the table shown. According to the data table, how much force is acting on the cart when the students measure an acceleration of 2.6m/s² ?

• 13 N

• 7 N

• 8 N

• 12 N

Tags

NGSS.MS-PS2-2

The diagram shows a boat moving north in a river at 3 m/s while the current in the river moves south at 1 m/s. How will the boat be affected if it enters a part of the river where the current is moving south at 2 m/s?

• The boat will move faster.

• The boat will move slower.

• The boat will stop.

• The boat will move to the west.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1