Answer:
Given: mass 1200kg
initial velocity: 4m/s
finial velocity: 10 m/s
time 3 sec
then
speed; initial velocity + final velocity/2
4+10/3
: 4.66m/s2
<span>2. mass of both objects doubled?
Hope it helped!</span>
Answer:
75.6J
Explanation:
A watt is joule/second [W = J/s]
and they give you the watts and the seconds so you only need to substitute knowing W=joule/second
1.68J/s * 45s = 75.6J
Answer:
170 N
Explanation:
Sum of the forces in the radial direction:
∑F = ma
T = m v² / r
T = (0.63 kg) (7.8 m/s)² / (0.23 m)
T = 170 N
