Acceleration, Force and Motion

If she experiences accelerated motion, which of the following could be occurring?

• A) She is moving at a constant speed.

• B) She is turning a corner.

• C) She is slowing down.

• D) Both B and C.

Tags

NGSS.MS-PS2-2

Jason is driving down Oak Street when a deer suddenly runs into the road. He slams on the brakes, coming to an abrupt stop. Which of the following could be his acceleration?

• 3.8 m/s² forward

• -3.8 m/s² forward

• 0.08 m/s forward

• -0.08 m/s² forward

Tags

NGSS.MS-PS2-2

A velocity-time graph shows the motion of two objects, A and B. Which object has the greatest acceleration?

• Object b

• Object A

• They have the same acceleration.

• The graph does not provide enough information.

Tags

NGSS.MS-PS2-2

What formula represents the slope of a velocity-time graph?

• Distance + Time

• Acceleration + Time

• Velocity + Time

• Change in Velocity + Time

A box is being pushed with a force of 90 N to the right and moves at a constant velocity. What is the force of friction acting on the box?

• More than 90 N to the left

• 90 N to the right

• 90 N to the left

• 0 N

A car speeds up as it enters the highway and then maintains a steady speed of 65 mph. What type of forces acted on the car while it was accelerating?

• Balanced forces

• Unbalanced forces

• No forces

Tags

NGSS.MS-PS2-2

Once the car reaches 65 mph and uses cruise control to maintain speed, what type of forces are acting on it?

• A) Balanced forces

• B) Unbalanced forces

• C) No motion

• D) Frictional forces only

In an experiment, the variable that is plotted on the x-axis in a velocity-time graph is:

• Acceleration

• Velocity

• Time

• Distance

Two bumper cars collide at an amusement park. After the collision, one car moves in a new direction. What is the cause of this change in motion?

• The car suddenly had a greater frictional force applied to it.

• A balanced force acted on the car.

• An unbalanced force acted on the car.

• The car’s speed changed but not its direction.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Classify each of the following as a scalar or a vector: Force: __________ Time: __________ Acceleration: __________ Displacement: __________ Distance: __________ Velocity: __________ Speed: __________

• Force: Vector Time: Scalar Acceleration: Vector Displacement: Vector Distance: Scalar Velocity: Vector Speed: Scalar

• Force: Scalar Time: Vector Acceleration: Scalar Displacement: Scalar Distance: Vector Velocity: Scalar Speed: Vector

• Force: Vector Time: Vector Acceleration: Scalar Displacement: Vector Distance: Scalar Velocity: Scalar Speed: Vector

• Force: Scalar Time: Scalar Acceleration: Vector Displacement: Scalar Distance: Vector Velocity: Vector Speed: Scalar

Tags

NGSS.HS-PS2-1