- #1
glasgowm
- 16
- 0
Okay I suck at physics and if someone could help me out it would be greatly appreciated.
Worked it out to be 0.4s using s = ut + 1/2 at^2
0.8m = 1/2 * 9.8t^2
1.6/9.8 = t^2
t=0.4s
but whenever I work this out I get 4m/s. :(
v = u + at
v = 9.8 * .4
v = 4m/s
Dont think this place is really for Secondary level Physics but I couldn't find anywhere else
- A ball is projected horizontally from the edge of a table which is 0.8 m high, as shown below. The ball lands 0.2m from the table
- How long does the ball take to fall to the ground?
Worked it out to be 0.4s using s = ut + 1/2 at^2
0.8m = 1/2 * 9.8t^2
1.6/9.8 = t^2
t=0.4s
- Hence show that the ball was projected with a horizontal speed of 0.5ms
but whenever I work this out I get 4m/s. :(
v = u + at
v = 9.8 * .4
v = 4m/s
Dont think this place is really for Secondary level Physics but I couldn't find anywhere else