Question

A car moves in a straight line from rest at t= 0 . It asselerates with 2 m per second square. find time and velocity if displacement = 25 m

Answer 1

Answer:

given : a = 2m/sec², S = 25 m, u = 0

to find : t = ? v = ?

formula used : v² - u² = 2as and v = u + at

v² - 0² = 2×2×25

v² = 100

v = √100 = 10 m/sec

v = u + at

10 = 0 + 2 × t

2t = 10

t = 5 sec

therefore velocity v = 10m/sec , time t = 5 sec