Answer:All balls have same velocity
Explanation:
Ball A
horizontal velocity
vertical velocity
let h be the height of building
Vertical velocity acquired by Ball A
Velocity just before hitting ground=
Ball B
launched with velocity u at angle of 45 above horizontal
horizontal velocity will remain same as there is no acceleration in that direction
vertical velocity just before hitting the floor
Final velocity before hitting ground
Ball C
horizontal velocity will remain same as there is no acceleration in that direction
vertical velocity just before hitting the floor
Final velocity before hitting ground
Thus all three balls will have same final velocity.
Answer:
4.5454 s
Explanation:
Final velocity is 0 m/s..
Initial velocity is 25 m/s..
we have to find out the time..
so to do that we must substrate initial velocity from the final velocity and then divide the answer by the deceleration..
After doing that I got the answer.. 4.5454 S
Hope this helped you.. Have a nice day dear ❤️..
Answer:
This can easily be solved using the "range" formula
R = V0^2 * sin 2θ / g
V0^2 = g R / sin 2θ = 9.80 * 43 / sin 144 = 717 m^2/s^2
V0 = 26.8 m/s
You answer should be C sorry if I’m wrong