Question

A ball is thrown up from the ground with a speed of 30 m/s. (Take the value of g = 10m/s2

The time after which it comes back to the ground is:​

Answer 1

Answer:

Velocity at equal height remains equal in magnitude and hence

v

2

=u

2

+2as

20

2

=10

2

+2×10×h

∴h=

2×10

400−100

=

20

300

=15m

solution