Adaredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 31.0 m/s. a net is positioned a horizontal distance of 48.5 m from the cannon. at what height above the cannon should the net be placed in order to catch the daredevil?

s = vcos(x)t

50 = 25cos(45)t

cos(45)t = 2

t = 2/cos(45) = 2sqrt(2)

h = vsin(x)t + gt^2/2

h = 25sin(45)*2sqrt(2) - 4.9*8

h = 10.8 metres

Explanation:

24.5 m

Explanation:

First, find the time it takes for the daredevil to travel 48.5 m horizontally:

x = x₀ + v₀ t + ½ at²

(48.5 m) = (0 m) + (31.0 m/s cos 45.0°) t + ½ (0 m/s²) t²

t = 2.21 s

Next, find the vertical position reached at this time:

y = y₀ + v₀ t + ½ at²

y = (0 m) + (31.0 m/s sin 45.0°) (2.21 s) + ½ (-9.8 m/s²) (2.21 s)²

y = 24.5 m

The net should be placed 24.5 meters above the cannon.

moving ball hits still ball. mover stops, hit ball moves. momentum transfer.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y