Ch3_2
 
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Make sure to calculate your answers in SI units unless specified otherwise .
NOTE! For all problems neglect air resistance unless explicitly asked to consider it. 

1) A football is kicked from level ground and lands after s at a distance of yards from the kicker. What is the horizontal component of the velocity with which the ball leaves the kicker's foot (sheet 17,19, drawing in 21 helps) ?

2) A football is kicked from level ground and lands after s back on the ground. What is the risetime of the ball (the time when the maximum height is reached) (see sheet 23, Ch2) ?
3) A football is kicked from level ground and lands after s back on the ground. What is the vertical component of the velocity with which the ball leaves the kicker's foot (sheet 17,19,21) ?
4) A projectile is launched horizontally from a height of m and hits the ground at the horizontal distance of m from the launch point. What is the launch velocity (sheet 17,19, 25') ?
5) A marble is dropped at the same time when a bullet is fired horizontally (both from the same height). The marble hits the ground after s. When does the bullet hit the ground (recall: no air resistance, see sheet 25,25') ?
6) The projectile from a be-be-gun which is pointed vertically up reaches a maximum height h1(see sketch Ch2 sheet 21). The maximum height when the same gun is tilted (sheet 21)at an angle of degrees with respect to the horizontal is h2. What is the ratio h2/h1 (sheet 17,19) ?

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