A force of 16N is applied on a 4.0kg block that is at res...
A force of 16N is applied on a 4.0kg block that is at rest on a smooth, horizontal surface. What is the velocity of the block at t = 5 seconds?
4ms-1
10ms-1
20ms-1
50ms-1
80ms-1
Correct answer is C
F = ma
= \(\frac{m(u - v)}{t}\)
16 = \(\frac{4(v - 0)}{5}\)
v = 20ms-1
When an object is placed at the centre of curvature of a concave mirror, its image is formed at ...
The velocity of sound in air at 15°C is 35400ms\(^{-1}\). Calculate the velocity at 47\(^o\...
Which of the following pairs is an example of translucent bodies? ...
An alternating current with a frequency of 100HZ has a period of ...