Question

A catapult accelerates a rock from rest to a velocity of 15.0 m/s [S] over a time interval of 12.5 s. What is the rocks average acceleration.

Answer 1

Answer on Question #48303, Physics, Acoustics

A catapult accelerates a rock from rest to a velocity of $15.0 \, \text{m/s}$ [S] over a time interval of 12.5 s. What is the rocks average acceleration.

Acceleration by definition is:

$$a = \frac{v}{t}$$

Thus, acceleration of a rock is:

$$a = \frac{15.0 \, \frac{\text{m}}{\text{s}}}{12.5 \, \text{s}} = 1.20 \, \frac{\text{m}}{\text{s}^2}$$

Answer: acceleration of a rock is $1.20 \, \frac{\text{m}}{\text{s}^2}$

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