Question

a boy throws a ball upwards a speed of 10m/s. the mass of the ball is 400g. calculate how high the ball will go? also calculation the momentum of the ball at its hightest point.​

Answer 1

Answer:

_5m.,0 kg m/s^2.

Explanation:

V=U+AT

O=10 +(-10T)

T=1

now using S=UT +1/2at ^2

S=10-1/2*10

S=5m

Now use momentum formula

P=MV

at highest point it's velocity is 0.

P=0.4 *0=0

_ans_

Answer 2

The height and momentum will be 5 meters and momentum will be zero

Given - Speed and mass

Find - Height and momentum

Solution - The height of the ball will be calculated by the formula -

v² = u² + 2gh, where v represents final velocity, u is initial velocity, a refers to acceleration and S refers to height in this case.

The final velocity will be zero as the velocity at highest point will be zero.

0² = 10² - 2×10×h

0 = 100 - 20h

20h = 100

h = 100 ÷ 20

h = 5 meters

Finding the momentum using the formula -

Momentum = mass × velocity

Momentum = 400 × 0

Momentum = 0

Hence, the height that the ball will reach 5 meters and momentum will be zero.

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