Acceleration = 0.083 m/s²
Explanation:
Given:
Initial velocity of car is 0.
Final velocity of car is 36 km/h.
Time taken to attain final speed is 2 minutes.
To Find:
What is the acceleration of car ?
Formula to be used:
v = u + at
Solution:
First change the final velocity from km/h to m/s and also time to seconds.
[ To change km/h to m/s multiply by 5/18 ]
➙ Final velocity = 36(5/18) = 10 m/s.
[ 1 minutes = 60 seconds ]
➙ 2 minutes = 2(60) = 120 seconds.
Now, we have
v = 10 m/s.
u = 0 m/s.
t = 120 s.
- ⟹ v = u + at
- ⟹ 10 = 0 + a(120)
- ⟹ 10 = 120a
- ⟹ 10/120 = a
- ⟹ 0.083 m/s² = a
Hence, the acceleration of car is 0.083 m/s².
__more____info_____
➟ The rate of change of velocity is called acceleration. It is denoted by a.
➟ The velocity at which motion starts is termed as initial velocity. It is denote by u.
➟ The last velocity of an object after a period of time. It is denoted by v.
