10 ms.
11. A toy car initially moving with a uniform velocity
of 18 km h- comes to a stop in 2 s. Find the
retardation of the car in S.I. units.
Answers
Answered by
27
Intial velocity = 18kmph = 5mps
final velocity = 0 ( as body stops)
time taken = 2 sec
acceleration = change in velocitiy/time
acceleration
= (final velocity- intial velocity)/time
a. = 0-5/2 = -2.5 mpss
negative acceleration is also called retardation
so retardation = 2.5mpss
Answered by
7
AnSwEr :
❥ Initial Velocity = 18 km/h = 5 m/s
❥ Final Velocity = Zero ( As it comes at rest )
❥ Time Taken = 2 seconds
❥ Retardation ( negative acceleration )
☯ v = u + at
Here , a is taken negative because it is case of retardation .
➡ 0 = 5 + (-a)2
➡ 0 = 5 - 2a
➡ 5 = 2a
➡ a =
➡ a = 2.5
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Similar questions
Biology,
3 months ago