Question

Help! Help! Help! A Car weighing 800 kg moving with Velocity 10 m/s is uniformly accelerated with an Acceleration of 2m/s^2 for 20secs. Calculate the Work done and the Force required to accelerate the car.

Answer 1

Answer:

force =Mass× acceleration

800× 2= 1600N

work done =force ×displacement

using 2nd eq. of motion

S=ut+1/2at^2

=10×20+1/2×2×(20)^2

=200+400

600m

now work done =force×dis.

1600×600

= 9,60,000 j

960 kj

Answer 2

Explanation:

900 j is your answer.......