3 years ago

How do you find the change in velocity

Physics

1 answer:

arlik [135]3 years ago

6 0

Answer:

Multiply the acceleration by the time to obtain the velocity change.

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A 50 g mass is freely hanging from a horizontal meter stick at a distance of 99 cm from the pivot. Calculate the weight force W

Neko [114]

Answer:

W = 0.49 N

τ = 0.4851 Nm

Force

Explanation:

The weight force can be found as:

W = mg

W = (0.05 kg)(9.8 m/s²)

W = 0.49 N

The torque about the pivot can be found as:

τ = W*d

where,

τ = torque

d = distance between weight and pivot = 99 cm = 0.99 m

Therefore,

τ = (0.49 N)(0.99 m)

τ = 0.4851 Nm

The pivot exerts a FORCE on the meter stick because the pivot applies force normally over the stick and has a zero distance from stick.

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3 years ago

The object of badminton is to hit the birdie or "shuttlecock" over the net and onto to court to score how many points to win gam

xxTIMURxx [149]

Answer:

either 7 or 21

Explanation:

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A 5.75 × 107 kg battle ship originally at rest fires a 1100-kg artillery shell horizontally with a velocity of 550 m/s. show ans

prohojiy [21]

Answer:

-0.01052 m/s

Explanation:

M = mass of ship = $5.75\times 10^7\ kg$

m = mass of shell = 1100 kg

v = velocity of shell = 550 m/s

u = recoil velocity of ship

As linear momentum is conserved

$(M - m)u=-mv\\\Rightarrow u=-\frac{mv}{M - m}\\\Rightarrow u=-\frac{1100\times 550}{5.75\times 10^7+1100}\\\Rightarrow u=-0.01052\ m/s$

The recoil velocity of the ship taking the firing direction to be the positive direction is -0.01052 m/s

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What is the momentum of a 1200 kg car traveling with a speed of 27 m/s (60 mph)?

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Answer:

This is your answer

Explanation:

Actually I took this from go ogle

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I have one but can some one help with the second one?

alisha [4.7K]

Answer:

it is a, direction

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3 years ago