Impulse = Force x Time
By substituting, Impulse = 53 x 12 = 636 N . sec
B b b b b b b bb bb bb b b b b b b b b b
Answer:
2966 m
Explanation:
Assuming g = 9.8 m/s and ignoring air resistance,
the coin reaches 60 m/s in t = v/a = 60/9.8 = 6.12 s
h = 3150 - ½(9.8)6.12² = 2,966.326
Answer: v = √(30.1² + 2(9.81)(14.7)) = 34.560... ≈ 34.6 m/s
Explanation:
- Initial velocity,u = -2 m/s
- Final velocity,v = -10 m/s
- Time taken, t = 4 seconds
Find the acceleration ( a ) .
We know that,
Substituting the values in the above formula, we get
Hence,the acceleration of a body is -2 m/s².