Acceleration

Question 1

Determine the cause of acceleration in each scenario.

Revolt · Accepted Answer

An airplane turning from south to west at constant speed is accelerating due to a change in .: direction; A biker going 7 m/s west after travelling north at 5 m/s is accelerating due to a change in .: speed and direction; A runaway shopping cart speeding up as it goes down a hill is accelerating due to a change in .: speed

Question 2

Determine the cause of acceleration in each scenario.

Revolt · Accepted Answer

✔ direction; An airplane turning from south to west at constant speed is accelerating due to a change in .: direction; A biker going 7 m/s west after travelling north at 5 m/s is accelerating due to a change in .: speed and direction; A runaway shopping cart speeding up as it goes down a hill is accelerating due to a change in .: speed

Question 3

speedX direction✔ speed and direction

Revolt · Accepted Answer

✔ speed and direction

Question 4

✔ speeddirectionspeed and direction

Revolt · Accepted Answer

✔ speed

Question 5

Which statement correctly describes the differences between positive and negative acceleration?

Revolt · Accepted Answer

Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed.

Question 6

Until a train is a safe distance from the station it must travel at 5 m/s. Once the train is on open track it can speed up to 45 m/s. If it takes a train 8 seconds to reach 45 m/s, what is the acceleration of the train? (Round your answer to the nearest whole number.)

Revolt · Accepted Answer

5 m/s2

Question 7

An airplane traveling 245 m/s east experienced turbulence, so the pilot decided to slow down to 230 m/s. It took the pilot 7 seconds to get down to this speed. What is the acceleration of the plane? (Round your answer to the nearest integer.)

Revolt · Accepted Answer

–2 m/s2

Question 8

A cyclist going downhill is accelerating at 1.2 m/s2. If the final velocity of the cyclist is 16 m/s after 10 seconds, what is the cyclist’s initial velocity?

Revolt · Accepted Answer

4 m/s

Question 9

Complete the passage to describe velocity vs time graphs.

Revolt · Accepted Answer

⇒ Time: Time; x: velocity

Question 10

Use the graph to determine acceleration and velocity.

Revolt · Accepted Answer

A and C; 40 m/s

Acceleration Answers

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