Option A is discarded due to the fact that we deserve to not conclude from the statement that is a bird flying 10m/s for 10 seconds.

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Option B is correct due to the fact that it is mentioned that a car is slowing from 60 m/s for 10 seconds.

Since, the rate is slowing means speed is changing.

Therefore, alternative B is correct.

Option C and also D room discarded due to the fact that is we have the right to not conclude anything indigenous the offered statement.



From a static warm air balloon, a 10kg projectile is introduced at a rate of 10m / s upwards. If the balloon has actually a fixed of 90kg. W

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c. 1.11 m/s down

Explanation:

Momentum is conserved.

See more: What Occurs When Energy Is Transferred From One Object To Another ?

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

Assuming the balloon and also projectile are initially at rest:

(90 kg) (0 m/s) + (10 kg) (0 m/s) = (90 kg) v + (10 kg) (10 m/s)

0 kg m/s = (90 kg) v + 100 kg m/s

v = -1.11 m/s




An unmarked police car traveling a constant 95.0 km/h is happen by a speeder traveling 110 km/h . Specifically 2.00 s after the spe

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So police auto will overtake the speeder after ~ 5.64 s

Explanation:

Initially the distance between police car and the speeder when police automobile is around to accelerate

*

*

*

*

now us have

now velocity that police with respect come speeder is provided as

*

relative acceleration that police auto with respect come speeder

*

now the time taken to cover the distance between police car and also speeder is given as

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c since that is the only time the it is declared that the is applying a force to the watercraft himself instead of just moving the .