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3 years ago

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A person running down the hallway at a velocity of 4.2 m/s comes to a stop in a time of 1.8 seconds to avoid hitting the wall. W

hat was the acceleration of the person?
A.) 7.6 m/s/s
B.) -7.6 m/s/s
C.) 2.3 m/s/s
D.) -2.3 m/s/s

2 answers:

kumpel [21]3 years ago

6 0

Hshshshhshdhdhdhdhddhdhdhdhdhdh

adoni [48]3 years ago

3 0

Answer:

It's not -7.6

Explanation:

All I can tell you

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3 years ago

Lonnie pitches a baseball of mass 0.20 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to

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Answer:

B) 20N.s is the correct answer

Explanation:

The formula for the impulse is given as:

Impulse = change in momentum

Impulse = mass × change in speed

Impulse = m × ΔV

Given:

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Final speed = -60 m/s (Since the the ball will now move in the opposite direction after hitting the bat, the speed is negative)

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Thus, we have

Impulse = 0.20 × (40m/s - (-60)m/s)

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3 years ago