A = (v-u)/t
v - speed
u - initial speed (zero here)
t - time taken
a=(36-0)/0.1 = 360 m/s^2
Answer:
Applying the law's theory and utilizing the equation of momentum ie. p=mv
Explanation:
The law of conservation of linear momentum states that the momentum in a <em>closed</em> system remains constant. Because a collision is inelastic, this proves that the system is closed. So the equation of momentum is p=mv, p is momentum, m is mass and v is velocity.
Because the momentum is conserved, the momentum (p) before the collision should be equal to the p after the collision, so we can equate them and solve for the unknown:
p=m.v
p(before) = p(after)
m(before) x v(before) = m(after) x v(after)
using this equation, you solve it and this helps you solve collision problems.
Answer:
It will cover a distance of 90.155 m.
Explanation:
For the first case, using the kinematic equation 3,
v^2-u^2=2as
Here v=0, u=50 km/h which is 13.88 m/s and x=10 m. so
0-(13.88)^2=2*a*10
a=9.63 m/s^2
For the second case, u=150 km/h which is 41.67 m/s.
If the acceleration is same for this case, then using the same kinematic equation.
0-(41.67)^2=2*9.63*s
s=90.155 m
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Answer:
7revolutions
Explanation:
Given parameters:
Initial revolution = 250rpm
Final revolution = 150rpm
Time = 4.2s
Unknown:
Number of revolutions that occur at this time = ?
Solution:
To solve this problem;
let us find the change in revolution = 250rpm - 150rpm = 100rpm
Convert the time to seconds;
60s makes 1 minute
4.2s will make 
= 0.07min
So;
The number of revolutions at this time = 100rpm x 0.07min
= 7revolutions
Answer:
work
Explanation:
In physics, work is a term that measures the energy expended in a moving object; most commonly force times distance. No work is said to be done if the object does not move. However, during the process, a measure of energy is usually extracted in the process.
