High School

A ball is set at the top of a 97.6 cm long ramp. Once the ball is released, it takes 2.4 seconds to reach the bottom of the ramp. What was the average velocity of the ball as it traveled down the ramp?

A) 234.24 cm/s
B) 40.67 cm/s
C) 0.025 cm/s
D) 52.37 cm/s

Answer :

The change in position or displacement (x) divided by the time intervals (t) during which the displacement happens is the definition of average velocity. The correct option is B.

The ratio of total distance traveled to total time traveled represents average speed. The average velocity, on the other hand, is the proportion of total displacement to total time. Average velocity is a vector, while average speed is a scalar.

V average = Total displacement/ Total time

Total displacement = 97.6 cm

Total time = 2.4 s

V average = 97.6 / 2.4

V average = 40.6 m/s

Length of the ramp = 97.6 cm

Length = 0.976 m

V average = 0.976 / 2.4

V average = 0.406 m/s

Thus the correct option is B.

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