2.gtgtcosA stone is projected with speed 20 m/s at angle 37e with the

1.	2.gtgtcosA stone is projected with speed 20 m/s at angle 37e with the horizontal and it hits the ground with sopeet12 m/s due to air resistance. Assume the effect of air resistance is to reduce only horizontal componeof velocity. Then the time of flight will be (g 10 m/s)3.
Answer» The time of flight is dependent on the vertical component of the velocity of the projectile only. The vertical component of the projectile velocity here is, vy= u sinθ = 20 sin37 = 12 m/s And, time flight is given by, t = 2vy/g = 2 × 12/10 = 2.4 s

2.gtgtcosA stone is projected with speed 20 m/s at angle 37e with the horizontal and it hits the ground with sopeet12 m/s due to air resistance. Assume the effect of air resistance is to reduce only horizontal componeof velocity. Then the time of flight will be (g 10 m/s)3.

Answer»

The time of flight is dependent on the vertical component of the velocity of the projectile only.

The vertical component of the projectile velocity here is,

vy= u sinθ = 20 sin37 = 12 m/s

And, time flight is given by, t = 2vy/g = 2 × 12/10 = 2.4 s

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2.gtgtcosA stone is projected with speed 20 m/s at angle 37e with the horizontal and it hits the ground with sopeet12 m/s due to air resistance. Assume the effect of air resistance is to reduce only horizontal componeof velocity. Then the time of flight will be (g 10 m/s)3.

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