Graphing Acceleration and velocity HW

A cheetah chases a gazelle, reaching a sped of 28 m/s. A graph of the cheetah’s velocity over time is shown below where rightwards is the positive velocity direction.

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Tags

NGSS.HS-PS2-1

Irene drops a clay ball at time t=0. The ball stops when it hits the ground. Which of the following graphs best shows the velocity v of the clay ball when it is dropped until it hits the ground?

Assume upward is the positive direction.

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Tags

NGSS.HS-PS2-1

A hummingbird is flying around and its velocity v as a function of time t is given in the graph below where rightwards is the positive velocity direction. What is the hummingbird’s displacement from t=3.0s to 3.5s?

Answer with two significant digits.

• -2.0m

• 2.0 m

• 3.5m

• -3.5m

A baby elephant trots in a straight line along a river. The horizontal position of the elephant in meters over time is shown below.

What is the displacement of the elephant between 0s and 16s?

• 9.0 m

• -9.0 m

• 12.6 m

• 20.0 m

A baby elephant trots in a straight line along a river. The horizontal position of the elephant in meters over time is shown below.

What is the distance travelled by the elephant between 0s and 16s?

• 9.0 m

• -9.0 m

• 8.0 m

• 12.6 m

A caterpillar is climbing vertically on a leaf. Its motion is shown on the following graph of vertical position y vs. time t. What is the instantaneous velocity of the caterpillar at time t=6s?

• 0.33 m/s

• 6.0 m/s

• 0 m/s

• 3.0 m/s

A baby crawls toward a toy. Its motion is shown on the following graph of horizontal position x vs. time t. What is the average speed of the baby between the times t=0s and t=4s?

• 1.0 m/s

• 0.25 m/s

• 0.50 m/s

• 4.0 m/s

Tags

NGSS.MS-PS3-1

A wildebeest runs with an average speed of 4.0 m/s for 15 s. What was its distance travelled in meters?

• 15 m

• 65 m

• 20 m

• 60 m