Question 1(e)(i) Why is the motion of a body moving with a constant speed around a circular path said to be accelerated? [2](ii) Name the unit of physical quantity obtained by the formula 2KV2\dfrac{2K}{V^2}V22K.Where K: kinetic energy, V: Linear Velocity.

Question

Question 1(e)(i) Why is the motion of a body moving with a constant speed around a circular path said to be accelerated? [2](ii) Name the unit of physical quantity obtained by the formula 2KV2\dfrac{2K}{V^2}V22K​.Where K: kinetic energy, V: Linear Velocity.

Accepted Answer

(i) The motion of a body moving with a constant speed around a circular path is said to be accelerated because as the direction keeps changing the velocity changes and therefore it's an accelerated motion.

(ii) $\dfrac{2K}{V^2}$ = $\dfrac{2 \times (\dfrac{1}{2} \times mV^2)}{V^2}$ = m.

Therefore, the quantity, $\dfrac{2K}{V^2}$ will have the unit of mass m which is kilogram (kg).

Solved 2018 Question Paper ICSE Class 10 Physics — Question 5

Question 1(e)