Answer:upper right hand side i think
Explanation:
Answer:
F = 30 N Directed up
Explanation:
We can solve this problem using the momentum and momentum relationship.
I = ΔP
I = ∫ F dt
As we are asked for the average force, that leaves the integral, giving
I = F t
F t = m - m v₀
F = m (-v₀) / t
Note that, if you define the upward positive direction, the initial velocity is negative
Let's calculate
F = 0.15 (3.5 - (-6.5)) / 0.050
F = 30 N
Directed up
Answer:
wildlife reserves are not available for camping...but you can camp at a skatepark
Answer:
10.71m/s
Explanation:
Mechanical energy is conserved since the ramp surface had no friction and the experiences no significant air resistance
Potential energy at the top of the ramp = mgh
where m is m, g = 9.8 m/s² ( acceleration due to gravity ) and h is height
since the length of the surface L of the ramp is 20.0 m and it is inclined at 17°
h, height = Lsinθ = 20 sin 17° = 5.85 m
kinetic energy of the block = mv²
potential energy = kinetic energy
m × 9.8 × 5.85 m = mv²
cancel m on both side
v = √(2 × 9.8 × 5.85) = 10.71m/s