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A car is driving at 60 m/s. After 7 seconds, it is traveling at 45 m/s. What is the acceleration of the car? (round to the nearest hundredth)
-2.14 m/s2
A plane is flying at 200 m/s. 30 seconds later, it is flying at 235 m/s. What is the acceleration of the plane? (round to the nearest hundredth)
1.17 m/s2
What is the change in velocity over time called?
acceleration
what is the formula for acceleration?
(final velocity - initial velocity) / time
If an object increases its speed, is it accelerating?
yes
If an object decreases its speed, is it accelerating?
yes
If an object is moving at a constant speed but changes its direction, is it accelerating?
yes
If an object is moving at a constant speed in the same direction, is it accelerating?
no
A motorcycle increases its speed from 8 m/s to 30 m/s in 9 seconds. What is the acceleration of the motorcycle? (Please round to the nearest hundredth)
2.44 m/s2
What is the acceleration of a baseball when its speed increases from 1 m/s to 25 m/s in 1 second?
24 m/s2
A man is walking at a velocity of 3 miles per hour to the west. A woman is walking at a velocity of 3 miles per hour to the east. Are they traveling at the same velocity?
No, because they are traveling in different directions.
A walker travels at a speed of 3 miles per hour. If they walked for 24 hours straight, how much distance would they cover (in miles)?
72 miles
Mrs. Wimmer runs at a speed of 88 feet per second for 30 seconds. Mr. Christman runs at a speed of 89 feet per second for 28 seconds. Who runs the farthest distance?
Mrs. Wimmer. She will run 2,640 feet while Mr. Christman will only run 2,492 feet.
A woman runs 26.2 miles in 4 hours. What is her average speed in miles per hour?
6.55 miles per hour
A car drives in a circle at a constant speed, is this car accelerating?
Yes, because it is changing its direction.
Is acceleration a vector quantity or a scalar quantity?
Vector quantity, because it has magnitude and direction.
