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kiruha [24]
3 years ago
15

Select the correct answer.

Physics
1 answer:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

All of the above.

Explanation:

All of these steps are useful towards getting a job.

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a car is moving down the street at 55km/h. a child suddenly runs into the street. If it takes the driver 0.75 seconds to react a
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4 years ago
A ball is thrown straight upward and returns to the thrower's hand after 3 seconds in the air. A second ball is thrown at an ang
Katena32 [7]

Explanation:

Given that the first ball is thrown vertically and upward.

since it reaches the throwers hand after 3 seconds, then the time taken to reach maximum height is

= T/2

=3/2

=1.5 seconds

Also, the projection angle for the second ball is 30°

we know that at maximum height vertical velocity is 0

therefore the final velocity of the first ball is

Vy= 0

Also, since the first ball is thrown upward the horizontal velocity is 0

Vx=0

from the first law of motion

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since both reach the same height, they will have the same vertical velocity

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Vo=Uy/sin∅

Vo= 14.7/sin 30

Vo=29.4m/s

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3 years ago
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