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Novosadov [1.4K]
3 years ago
13

Are these two correct ?

Physics
1 answer:
gulaghasi [49]3 years ago
5 0

Answer:

7. Your answer is correct dear, just add the unit

8. answer is 1.17m/s²

Explanation:

queation 7.

m = 3kg, F = 9N, a ?

F = ma

a = F/m = 9/3 = 3m/s²

Use the same approach for question 8

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2 years ago
The rocket is fired vertically and tracked by the radar station shown. When θ reaches 66°, other corresponding measurements give
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Answer:

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Explanation:

We are given;

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Angular velocity; ω = θ˙˙ = 0.019 rad/s

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So, velocity of the rocket for the given position will be;

v = rθ˙˙/cos θ

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Acceleration is given by the formula ;

a = a_r/sinθ

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a_r = r¨ - r(θ˙˙)²

Thus,

a = (r¨ - r(θ˙˙)²)/sinθ

Plugging in the relevant values, we obtain;

a = (85 - 32700(0.019)²)/sin66

a = (85 - 11.8047)/0.9135

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