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A body is moving with velocity 30 m/s towards east. After 10 seconds its velocity becomes 40 m/s towards north. The average acceleration of the body is
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- 1 m/s²
- 7 m/s²
- 7 m/s²
- 5 m/s²
Correct Option: D
Average acceleration
| <a> = | |
| total time |
| <a> = | |
| 10 - 0 |
<a> = √4² + (-3)²
<a> = 5 m/sec²
