2 years ago

a ball of 150 grams is hit with a bat the ball starts travelling with a velocity of 3m/s what is the momentum of the ball

Physics

1 answer:

dangina [55]2 years ago

5 0

Answer:

150 g= 0.15 kg

Momentum = mass * velocity

= 0.15 * 3

= 0.45 kg m/s

Explanation:

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What should be done to lift the same load by applying less effort on an inclined plane

Scorpion4ik [409]

Answer:

Reduce the friction at the surface

Explanation:

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3 years ago

1.) A stone falls from rest from the top of a cliff.

KengaRu [80]

Answer:

Explanation:

ignore air resistance

Let t be the time of fall for the dropped stone.

½(9.8)t² = 43.12(t - 2.2) + ½(9.8)(t - 2.2)²

4.9t² = 43.12t - 94.864 + 4.9(t² - 4.4t + 4.84)

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0 = 21.56t - 71.148

t = 71.148/21.56 = 3.3 s

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4 0

2 years ago

The mass of an object with 500 J of kinetic energy moving with a velocity of 5 m/s is/

antiseptic1488 [7]

Answer:

495

Explanation:

subtract 500 and 5

7 0

3 years ago

Assume that the force of a bow on an arrow behaves like the spring force. In aiming the arrow, an archer pulls the drawstring ba

Alex

Answer:

v=39.05 m/s

Explanation:

Given that

x= 56 cm

F= 158 N

m= 58 g = 0.058 kg

Lets take spring constant = k

At the initial position,before releasing the arrow

F= k x

By putting the values

F= k x

158= 0.56 k

k=282.14 N/m

Now from energy conservation

Lets take final speed of the arrow after releasing

$\dfrac{1}{2}kx^2=\dfrac{1}{2}mv^2$

k x²=mv²

282.14 x 0.56² = 0.058 v²

v=39.05 m/s

3 0

3 years ago