Hi there!
We can use the following equation for constant velocity:

d = displacement (m)
v = velocity (m/s)
t = time (s)
Plug in the givens:

Going to college and passing all your classes
Answer:130
Explanation:just answered it
Answer:
In order to hit the same point with the second ball, you should throw it at an angle of 18° above the horizontal.
Explanation:
Horizontal reach formula for projectiles tells us

where
is the initial velocity and
the angle above the horizontal.
Since for both shots the reach must be the same, we have
.
Answer:
In D: 3J
Explanation:
Potential energy: Ep=mgh where m is the mass, h altitude.
In point A: h=20cm=0.2m
Epa=12=0.2×mg. Thus mg=12/0.2=60N
For point D: hd=5cm=0.05m
Epd=mg×0.05=60×0.05=3J