B. picking up a box off the floor
Answer:
Where m is Ashley's mass and M is Miranda mass, in kg.
Explanation:
Let m be Ashley's mass and M be Miranda mass, in kg.
By the law of momentum conservation, after the hop on, we have the following momentum equation:
mv + MV = (m + M)S
where v = 3m/s is Ashley speed before the hop on, V = 4.2 m/s is Miranda's speed before the hop on. And S is their speed after
Answer:
727.67 km
Explanation:
Sine they have Same distance D
distance = speed * time
D = 5.08t
D = 8.3312(t+55.9)
so
5.08t = 8.3312(t+55.9) t in
3.2512t = 465.71
t = 143.2s
Subtitute t
D=5.08 t
= 5.08 × 143.2
= 727.67km
Answer:
-2 m/s²
8.7 m/s
Explanation:
Using Newton's second law, the sum of forces in the x direction:
∑F = ma
-120 N = (60 kg) a
a = -2 m/s²
Given:
Δx = 6.0 m
v₀ = 10 m/s
a = -2 m/s²
Find: v
v² = v₀² + 2aΔx
v² = (10 m/s)² + 2 (-2 m/s²) (6.0 m)
v = 8.7 m/s
Do they give answer choices? or is it free write? i’ll help if you tell me!!