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joja [24]
3 years ago
8

6. A stomp rocket takes 1.5 seconds to reach its maximum height

Physics
1 answer:
anyanavicka [17]3 years ago
4 0

Answer:

a) 15 m/s

b) 11.25 m

Explanation:

a) when the rocket is approaching to the maximum height , its velocity =0 (assume g= 10 m/s² downwards)

applying motion equations  upwards

V = U +at

0 = U + (-10)*1.5

U = 15 m/s  (initial velocity)

b) let maximum height be S  and V =0 (velocity at highest point)

V² = U² + 2aS

0 = 15² + 2 * (-10)*S

S = 11.25 m

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Answer:

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Explanation:

Applying the law of conservation of energy,

The thermal energy created = Kinetic energy of the suv.

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From the question,

Given: m = 3000 kg, v = 20 m/s

Substitute these values into equation 1

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Answer:

c

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Answer:

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