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Projectiles question watch

1. Can someone help here? Stuck on iii) and iv). The lowest speed and greatest speed bit is confusing me. i)0.47s ii)0.64s iii)25.5ms^-1 iv) 28.8ms^-1
2. (Original post by Kalabamboo)
Can someone help here? Stuck on iii) and iv). The lowest speed and greatest speed bit is confusing me. i)0.47s ii)0.64s iii)25.5ms^-1 iv) 28.8ms^-1
It's basically just speed = distance/time. In iii) because you're caluculating minumum distance it's minumum speed- the distance is 12m and time 0.47s. In iv) because ur calculating max distance it's max speed- distance = 18.4m and time = 0.64s. These give you the correct answers
3. (Original post by ZaraHuss)
It's basically just speed = distance/time. In iii) because you're caluculating minumum distance it's minumum speed- the distance is 12m and time 0.47s. In iv) because ur calculating max distance it's max speed- distance = 18.4m and time = 0.64s. These give you the correct answers
Thanks! But why is it that we are calculating the minimum distance horizontally for iii) and the maximum distance horizontally for iv)? Why are we not calculating the distance vertically?
4. (Original post by Kalabamboo)
Thanks! But why is it that we are calculating the minimum distance horizontally for iii) and the maximum distance horizontally for iv)? Why are we not calculating the distance vertically?
Because the net and edge of court is a horizontal distance away.

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