Answer:
The instantaneous speed is 20 m/s
Step-by-step explanation:
The instantaneous speed is the speed of an object at a particular
moment in time
To calculate instantaneous speed, we need to divide part of the total
distance traveled by time
We need to find the instantaneous speed at 10 seconds for a car that
accelerates at 2 m/s² from a position of rest
That means the car accelerate from rest
The initial speed u is zero
We can find the instantaneous speed at 10 seconds by using the rule
→ v = u + at
→ u = 0 , a = 2 m/s² , t = 10 seconds
Substitute these value in the rule
→ v = 0 + 2 × 10 = 20 m/s
The instantaneous speed is 20 m/s