Calculating Change in Speed or Velocity

Find the change in speed for the following word problem: A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its average acceleration?

• 4 m/s 
• 18 m/s
• 22 m/s 
• 26 m.s

Find the change in speed for the following word problem: A cyclist accelerates from 0 m/s to 8 m/s in 3 seconds. What is his acceleration? 

• 8 m/s
• 3 seconds
• 0 m/s
• 11 m/s

What is the starting speed in the following word problem: A car advertisement states that a certain car can accelerate from rest to 70 km/h in 7 seconds. Find the car’s average acceleration.

• o km/h
• 70 km/h
• 7 seconds
• 77 seconds

Find the change in speed for the following word problem: A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. What is the lizard’s average acceleration?

• 2 m/s
• 10 m/s
• 8 m/s 
• 12 m/s

What is the starting speed in the following word problem? If a Ferrari, with an initial velocity of 10 m/s, accelerates at a rate of 50 m/s/s for 3 seconds, what will its final velocity be?

• 10 m/s
• 50 m/s
• 40 m/s
• 60 m/s

What is the final velocity in the following word problem? A car accelerates from 25 km/hr to 55 km/hr in 30 seconds. What is its acceleration?

• 25 km/hr
• 55 km/hr
• 30 km/hr
• 80 km/hr

What is the final velocity in the following word problem? What is the deceleration of a bicycle that goes from 40m/s to 20m/s in 5 seconds?

• 40 m/s
• 20 m/s
• 5 seconds
• 60 m/s

Find the change in speed  for the following word problem: What is the deceleration of a bicycle that goes from 40m/s to 20m/s in 5 seconds?

• 20 m/s
• 40 m/s 
• 60 m/s
• 5 seconds

Find the change in speed for the following word problem: If a Ferrari, with an initial velocity of 10 m/s, accelerates at a rate of 50 m/s/s for 3 seconds, what will its final velocity be?

• 10 m/s
• 50 m/s
• 60 m/s
• 40 m/s

Find the change in speed for the following word problem: A car advertisement states that a certain car can accelerate from rest to 70 km/h in 7 seconds. Find the car’s average acceleration.

• o m/s
• 70 m/s
• 7 seconds
• 77 m/s