A rock falls from a 45-meter cliff. If it accelerates at 10 m/s², how fast is it going after 3 seconds? (v = at)
Answer
30 m/s
How to solve it
1
Acceleration: 10 m/s²
2
Time: 3 seconds
3
Velocity: 10 × 3 = 30 m/s
Hints
Use formula: velocity = acceleration × time