SVA differentiation

Two cars travel along a straight road. Car A travels at a constant speed of 20 meters per second, while Car B speeds up from 10 meters per second to 30 meters per second in 5 seconds. Which comparison of the cars' motions is correct?

• Car A and Car B have the same accelerations but different speeds.

• Car A and Car B have the same speeds but different velocities.

• Car A and Car B have the same velocities but different accelerations.

• Car A and Car B have the same speeds and velocities.

A roller coaster starts at the top of a hill with a speed of 15 meters per second. As it descends the hill, its speed increases to 30 meters per second. Which comparison of the roller coaster's motion is correct?

• The speed and velocity are the same at the top and bottom of the hill.

• The speed is the same, but the velocity is different at the top and bottom of the hill.

• The velocity is the same, but the speed is different at the top and bottom of the hill.

• The speed and velocity are different at the top and bottom of the hill.

A rocket is launched into space. As it travels, its velocity changes due to gravity and engine thrust. Which comparison of the rocket's motion is correct?

• The rocket's speed is constant, but its velocity changes.

• The rocket's velocity is constant, but its speed changes.

• Both the rocket's speed and velocity change.

• Neither the rocket's speed nor velocity changes.

Tags

NGSS.MS-PS3-1

A skateboarder moves at a constant speed of 5 meters per second around a circular skate park. At different points on the track, the skateboarder experiences different directions of velocity. Which comparison of the skateboarder's motion is correct?

• The skateboarder's speed is constant, but the velocity changes.

• The skateboarder's velocity is constant, but the speed changes.

• Both the skateboarder's speed and velocity change.

• Neither the skateboarder's speed nor velocity changes.

A cyclist rides at a constant velocity of 10 meters per second north for 2 minutes. Which comparison of the cyclist's motion is correct?

• The cyclist's speed is constant, but the velocity changes.

• The cyclist's velocity is constant, but the speed changes.

• Both the cyclist's speed and velocity change.

• Neither the cyclist's speed nor velocity change.

An airplane accelerates along a runway from rest to 100 meters per second in 20 seconds. Which comparison of the airplane's motion is correct?

• The airplane's speed is constant, but the velocity changes.

• The airplane's velocity is constant, but the speed changes.

• Both the airplane's speed and velocity change.

• Neither the airplane's speed nor velocity change.

A sprinter accelerates from rest to 10 meters per second in 2 seconds. Which comparison of the sprinter's motion is correct?

• At the start and end, the speeds are the same, but the velocities are different.

• At the start and end, the velocities are the same, but the accelerations are different.

• At the start and end, the accelerations are the same, but the speeds are different.

• At the start and end, the accelerations are the same, but the velocities are different.

A train moves at a constant speed of 60 kilometers per hour east for 30 minutes. Which comparison of the train's motion is correct?

• The train's speed is constant, but the velocity changes.

• The train's acceleration is constant, but the velocity changes.

• Both the train's speed and velocity change.

• Neither the train's speed nor velocity change.

A jogger runs around a circular track with a radius of 100 meters at a constant speed of 8 meters per second. Which comparison of the jogger's motion is correct?

• The jogger's speed is constant, but the velocity changes.

• The jogger's velocity is constant, but the speed changes.

• Both the jogger's speed and velocity change.

• Neither the jogger's speed nor velocity changes.

A fan blade rotates with increasing speed from 0 to 100 revolutions per minute in 10 seconds. Which comparison of the fan blade's motion is correct?

• The fan blade's speed is constant, but the velocity changes.

• The fan blade's velocity is constant, but the speed changes.

• Both the fan blade's speed and velocity change.

• Neither the fan blade's speed nor velocity changes.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2