Two air craft P and Q are flying at the same speed 300m/s. The direction along which P is flying is at right angles to the direc
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Kinetic Energy
How to calculate
Kinetic energy is given by K.E.
Where
- m is denoted to mass
- v is denoted to velocity
Answer
given,
initial velocity of skateboard = 5.1 m/s
angle above the horizontal = 55°
height of the ramp = 1 m
a) maximum height of projectile
H = 0.889 m
the maximum height of the skateboard above the ground
= 1 + 0.889
= 1.889 m
b) time to reach the height
t = 0.426 s
horizontal distance = u cos θ × t
= 5.1 × cos 55° × 0.426
horizontal distance = 1.25 m