6 The bar chart shows the A-level mathematics grades achieved by some students one year. A-level grades 120 100- 80 Frequency 60
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Answer:
Step-by-step explanation:
We are given that a variable force of magnitude F(x) moves a body along the x- axis from to
.
The net work done by the force in moving the body from to
.
=Velocity of the body at
Velocity of the body at
We know that
Work done=Final kinetic energy-Initial kinetic energy
K.E=
Hence, the net work done by the force is given by