Question

A rock is kicked horizontally at 15 m/s. How far does the rock travel horizontally in 3 seconds?

a) 5 m
b) 10 m
c) 15 m
d) 45 m

Answer 1

The rock travels 45 meters horizontally in 3 seconds, given a constant horizontal speed of 15 m/s with no horizontal acceleration.

Step-by-step explanation:

If a rock is kicked horizontally at 15 m/s, and we ignore air resistance, the horizontal velocity of the rock will remain constant because there is no acceleration in the horizontal direction. Thus, to determine how far the rock travels horizontally in 3 seconds, we can use the formula distance = speed × time.

We know the speed is 15 m/s and the time is 3 seconds, so the distance is:

Distance = 15 m/s × 3 s = 45 m.

Therefore, the correct answer is d) 45 m.