Answer:
92.1 meters
Explanation:
Given:
x₀ = 0 m
y = y₀ = 0 m
v₀ₓ = 31 cos 35° m/s
v₀ᵧ = 31 sin 35° m/s
aₓ = 0 m/s²
aᵧ = -9.8 m/s²
Find: x
First, we need to find the time:
y = y₀ + v₀ t + ½ at²
0 = 0 + (31 sin 35) t − 4.9 t²
t = 0 or (31 sin 35) / 4.9
Now find x:
x = x₀ + v₀ t + ½ at²
x = 0 + (31 cos 35°) (31 sin 35) / 4.9 + 0
x ≈ 92.1
The ball travels 92.1 meters.
Answer:
B. Along this path the gravitational potential energy of the system is never zero.
D. At every location along the comet's path the gravitational potential energy of the system is negative.
E. The sum of the kinetic energy of the system plus the gravitational potential energy of the system is the same at every location along this path.
Explanation:
Gravitational potential energy of the system is given as
now we know that
since the system is bounded to move together so the total mechanical energy must be negative
so sum of kinetic energy and potential energy must be negative at all locations.
Also we know that that potential energy is always non zero and a negative quantity here.