Arunner starts from rest and accelerates uniformly to a speed of 8.0 meters per second in 4.0 seconds. the magnitude of the acceleration of the runner is

The magnitude of the acceleration of the runner is .

Given :

Final Velocity = 8 m/sec

Initial Velocity = 0

Time = 4 sec

Solution :

We know that,

v = u + at  ---- (1)

Where,

v is final velocity,

u is initial velocity,

a is acceleration,

and t is time.

Now put the values of v, u and t in equation (1) we get,

The magnitude of the acceleration of the runner is .

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find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

friction

explanation:

they us to move forward and backwards