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creativ13 [48]
2 years ago
10

A car is driving across a street. It's change in displacement is 50 m. If it started with a velocity of 5 m/s and ended with a v

elocity of 7 m/s, what must the acceleration have been?
Physics
1 answer:
MrMuchimi2 years ago
8 0

Answer:

Ew an sao fan. anyway, it's 0.24m/s^2

Explanation:

Use this equation for 1 dimensional motion with constant acceleration:

Xf = Xi + Vi*T + 0.5A*T^2

Xf is 50 m when Xi is 0m

Vi is 5m/s

A is (7m/s-5m/s)/T = 2m/s/T

So,

50m = 0m + 5m/s *T + 0.5*2m/s/T * T^2

50m = 5m/s * T + 1m/s * T

50m = 6m/s * T

T = 8.33s

A is 2m/s/T

A is 2m/s/8.33s

A is 0.24m/s^2

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3 years ago
A 32.5 g cube of aluminum initially at 45.8 °C is submerged into 105.3 g of water at 15.4 °C. What is the final temperature of b
lakkis [162]

Answer:

T = 17.26 ^oC

Explanation:

At thermal equilibrium we have heat given by aluminium must be equal to the heat absorbed by the water

so we will have

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6 0
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A simple model of a hydrogen atom is a positive point charge +e (representing the proton) at the center of a ring of radius a wi
Norma-Jean [14]

Answer:

Now e is due to the ring at a

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