Answer:

1. A soccer ball is kicked horizontally of a 22-meter-high hill and lands 35 meters from the edge of the hill. Determine the total time travelled and initial horizontal velocity of the soccer ball.

Solution given:

height of hill[H]=22m

distance [d]=35m

now

total time travelled=

where g=9.8m/s²=gravity

=second

2.1second

now

initial horizontal velocity=d/t=35/2.1=16.6m/s.

2. A wooden box is thrown from the top of a 10-meter-high building with an initial horizontal velocity of 5 m/s. Determine the total time travelled and the range from the edge of the building to the landing location of the wooden box.

Solution given:

initial velocity[u]=5m/s

height[H]=10m

total time travelled [T]=?

range[R]=?

total time travelled=

where g=9.8m/s²=gravity

=second

1.02second

now

Range=u

=5*1.02=5.1m