A body is started from rest and reached the velocity 15m/s in 7sec. Find acceleration.
Answers
Answered by
41
Provided that:
- Initial velocity = 0 mps
- Final velocity = 15 mps
- Time = 7 sec
To calculate:
- The acceleration
Solution:
- The acceleration = 2.14 m/s sq.
Using concept(s):
- Acceleration formula
- We can also solve this question by using first equation of motion.
Using formula(s):
• Acceleration formula:
- a = (v-u)/t
• First equation of motion:
- v = u + at
Where, a denotes acceleration, u denotes initial velocity, v denotes final velocity and t denotes time taken.
Required solution:
~ By using acceleration formula let us solve this question!
→ a = (v-u)/t
→ a = (15-0)/7
→ a = 15/7
→ a = 2.14 mps sq.
→ Acceleration = 2.14 mps sq.
~ Also let us use first equation of motion to solve this question!
→ v = u + at
→ 15 = 0 + a(7)
→ 15 = 0 +7a
→ 15 = 7a
→ a = 15/7
→ a = 2.14 mps sq.
→ Acceleration = 2.14 mps sq.
Know more:
Answered by
85
- initial velocity=u=0m/s
- Final velocity=v=15m/s
- Time=t=7s.
We know
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