Answer:
a. 4v
Explanation:
Alf moves with speed v
Alf travel during the same amount of time that is Δt = (1/4)s
v = (1/4)s / Δt = s / 4 Δt
s / Δt = 4 v
Beth travels a distance s during time Δt,
speed of Beth = s / Δt = 4 v .
- Mass=m=142kg
- Acceleration=a=30m/s
- Force=F
Using Newton's second law



Answer:
Thats her fault.........................b
Explanation:
To me, that sounds like the "Law of Conservation of Energy".