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4 years ago

12

A football is thrown vertically with an initial velocity of 33m/s. Calculate the velocity of the ball when it’s height increased

5m

1 answer:

tatyana61 [14]4 years ago

5 0

The final velocity becomes 31.48 m/s

<u>Explanation:</u>

Given:

Initial velocity, u = 33 m/s

Height, h = 5m

Final velocity, v = ?

According to Newton's law:

v² - u² = 2gh

where,

g is the acceleration due to gravity and

g = 9.8 m/s²

On substituting the values we get:

$v^2 - (33)^2 = 2 X -9.8 X 5\\\\v^2 - 1089 = -98\\\\v^2 = 991\\\\v = 31.48 m/s$

Therefore, the final velocity becomes 31.48 m/s

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3 years ago

A block with mass m =6.4 kg is hung from a vertical spring. When the mass hangs in equilibrium, the spring stretches x = 0.28 m.

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Answer

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