How much time does it take for a car to accelerate from 3.44 m/s to 20: 9 m/s if the average acceleration is 6.00 m/s^2? 3.48 s 0.344 s 4.33 s 2.91 s a motorcycle at a stoplight takes 4.22 seconds to accelerate to 28.0 m/s after the light turns green. what is it’s average acceleration? 23.78 m/s^2 6.64 m/s^2 3.32 m/s^2 0.15 m/s^2 the change in velocity that occurs at a specific moment in time is known as instant acceleration average acceleration acceleration decelerationwith these!

a) 2.91s b) 6.64m/s² c) Instant acceleration

Explanation:

a) Acceleration is defined as the change in velocity of an object with respect to time. Mathematically,

Acceleration = change in velocity/time

Change in velocity = final velocity-initial velocity

Acceleration (a) = final velocity (v)/-initial velocity(u)/time(t)

Given final velocity = 20.9m/s

Initial velocity = 3.44m/s

Acceleration = 6m/s²

Time =?

Substituting in the formula we have;

6 = 20.9-3.44/t

6t = 17.46

t = 17.46/6

t = 2.91seconds

b) using the same formula for acceleration in a above;

a = v-u/t

Given v = 28m/s u = 0m/s(since it starts from rest) t = 4.22seconds

a = 28-0/4.22

a = 6.64m/s²

c) The change in velocity that occurs at a specific moment in time is known as Instant acceleration.

We know that acceleration is change in velocity with respect to time. If the acceleration now happens at a specific moment, it is known as instant acceleration i.e acceleration of the body at that instance

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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explanation:

the masses of the objects and the distance between them