1.

The distance travelled by a particleS=10t> (m). Instantaneous speed at t=2sis:(a) 10 m/s (b) 20 m/s(c) 40 m/s (d) 80 m/s

Answer»

differentiate 's' with respect to 'dt'.ds/dt=20t.now put t=2 in 20t.the answer is 40 m/s.

c) 40 m\s is the right answer of the following

please accept me best

40m/s is the correct answer for this question

option (c) is the right answer.

40m/s is correct answer

answer c is the correct answer



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