Question

A particle moves with a velocity ms^–1 under the influence of a constant force N. The instantaneous power applied to the particle is –

• A. 200 Js^–1
• B. 40 Js^–1
• C. 140 Js^–1
• D. 170 Js^–1

Answer 1

Answer: (C)

140 Js^–1

Answer 2

Power =

=

= (50 – 30 + 120) watt = 140 watt