A baseball is hit at an initial speed of 40 m/s at an angle of 60° above the horizontal. Find the ball's maximum height in meters. Use g = 9.81 m/s
A)
10.2
B)
20.4
0)
22.4
D)
61.2

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.

Avector a⃗ has a length of 8.6 m and points in the negative x direction. find the x component of the vector −3.7a⃗ .

Athird point charge q3 is now positioned halfway between q1 and q2. the net force on q2 now has a magnitude of f2,net = 5.861 n and points away from q1 and q3. what is the value (sign and magnitude) of the charge q3?