Using KE=1/2mv^2
v=
so v=10
v=
so v=10
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
1 answer:
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Answer:
m2 = 83.3 g
Explanation:
by conservation of momentum principle we have
as both sphere has same speed so
from conservation of kinetic energy principle we have
substituting this value in above equation to get m2 value
solving for m2 we get
m_1 = 250 g
m2 = 83.3 g
Answer:
150 km/hr²
Explanation:
The data for the motion of the train includes;
The train starts from rest, therefore, the initial velocity of the train, u = 0 km/hr
The speed of the train after 0.5 hours, v = 75 km/hr
The change in time during the motion of the train, Δt = 0.5 hours
The acceleration, 'a', is the rate of change of velocity with time;
Therefore, we have;
a = (75 km/hr - 0 km/hr)/(0.5 hr) = 150 km/hr²
a = 150 km/hr² = 150 km/hr² × 1,000 m/km × hr²/(3,600 s)² = 5/432 m/s²
The acceleration of the train, a = 150 km/hr² = 5/432 m/s².