Question

A driver starts his parked car and within 5 hr reaches a speed of 60 km/h, as he travels east. what is his acceleration?

Answer 1

a

Answer:

u=0

v=60 km/ hr

60 \times 1000 \\ 60 \times 60 = 1800

t =5

t = 5 \times3600 = 18000

a= ?

a = v - u \div t

= 1800 - 0 \div 18000 \\

1m/s^2\: ans

Answer 2

change in speed) / (time for the change)

and the direction of the change.

Acceleration = (60 - 0) km per hour / 5 sec = 12 km per hour per second, east.

I hear teachers all over the country complaining about that ugly unit.

It has to be changed to a more familiar unit of acceleration.

(12 km/hour) x (1 hour/3600sec) = 12,000/3600 = 3-1/3 meter/sec.

His acceleration is 3-1/3 meters per second² .

Step-by-step explanation: