140.0N
20.0N
4.0N
0.8N
Correct answer is B
F = \(\frac{mv - mu}{t} = \frac{16 - 12}{0.2} = 20N\)
240N
96N
20N
9N
Correct answer is B
F = ma = \(\frac{mv}{t} = \frac{8 \times 30}{2.5} = 96\)
A body is said to be moving with uniform acceleration if it experiences equal
increase in velocity at equal time intervals
decreases in velocity at equal time intervals
increases in speed at equal time intervals
decreases in speed at equal time intervals
Correct answer is A
No explanation has been provided for this answer.
The speed of an object in rectilinear motion can be determine from the
area under a velocity-time graph
area under a distance-time graph
slope of a distance-time graph
slope of a velocity-time graph
Correct answer is C
No explanation has been provided for this answer.
2500N
2000N
900N
625N
Correct answer is B
M.A = \(\frac{Eff \times V.r}{100} = \frac{80 \times 5}{100} = 4\)
Load = effort x M.A
= 4 x 500 = 2000N