Question

a car started from rest moves with uniform acceleration of 1m/s^-2 for 4 minutes . find the speed and distance travelled​

Answer 1

Answer:

v=240m/s

d=28800m

Step-by-step explanation:

given,

a=1

u=0

t=60×4=240

Hence

v=u+at

v=0+1(240)

v=240m/s

d=ut + 1/2at^2

d=0+ 1/2×240×240×1

d=28800m

Answer 2

Answer:

For finding speed, we'll apply 2nd equation of motion:

(distance) s = ut + 1/2(at^2)

= 0×t + 1/2(1× 240^2)

=28,800 m

Step-by-step explanation:

For finding v (final speed), let's apply 4th equation of motion

v² = u² + 2as

v² = 0² + 2×1×28800

v = √(57600)

v = 240 m/s