a car weighing 1600kg moving with a velocity of 30 meter per second ed uniformly coming to rest in 20 seconds calculate
1, initial momentum
2, final momentum
3, rate of change of momentum
4,acceleration of the car
5, magnitude of the force apply
Ur ans 3 is wrong
Rate of change of momentum is 2400 N
Plz always check and then post, how can anyone be this much irresponsible
1) initial momentum =mv
Mass =1600 kg
Velocity =30m/sec
=1600 *30=4800 kg m/s
2)final momentum=mv
If it is slowing down then the final velocity = 0m/Sec
Mass =1600kg
=mv
1600*0=0 kg m/sec
3)rate of change of momentum =m1u1 +m2u2=m1v1+m2v2
U = initial velocity =0m/sec
V=final velocity =30m/sec
Mass = 1600kg
1600*0+1600*0=1600*30+1600*30
0=4800+4800
Rate of change of momentum =9600
What is answer 4 and 5
Samaj nahi aaya explain briefly
Thoda aur sahi se samjao
Isme kuch clear nahi ho raha hai
Bakwash🤣
To calculate the various quantities related to the motion of the car, we can use the laws of motion. The key equation that relates all these quantities is:
Momentum = mass × velocity
1. Initial Momentum:
The initial momentum is the momentum of the car before it starts decelerating. To calculate it, we multiply the mass of the car by its initial velocity:
Initial Momentum = mass × initial velocity
2. Final Momentum:
The final momentum is the momentum of the car just before it comes to a rest. Since it comes to rest, the final velocity will be 0. To calculate the final momentum, we multiply the mass of the car by 0 (zero):
Final Momentum = mass × 0
3. Rate of Change of Momentum:
The rate of change of momentum is the change in momentum over time. It can be calculated using the formula:
Rate of Change of Momentum = (Final Momentum - Initial Momentum) / Time
4. Acceleration of the Car:
The acceleration of the car can be calculated using the formula:
Acceleration = Change in Velocity / Time
In this case, since the car comes to a rest, the change in velocity is equal to the initial velocity. So, the formula becomes:
Acceleration = -initial velocity / Time
(The negative sign indicates that the acceleration is in the opposite direction of the initial velocity; since the car is decelerating or slowing down.)
5. Magnitude of the Force Applied:
The magnitude of the force applied to the car can be calculated using Newton's second law of motion:
Force = Mass × Acceleration
Now let's calculate the values:
Given:
Mass (m) = 1600 kg
Initial Velocity (u) = 30 m/s
Time (t) = 20 s
1. Initial Momentum:
Initial Momentum = mass × initial velocity = 1600 kg × 30 m/s
2. Final Momentum:
Final Momentum = mass × 0 = 1600 kg × 0
3. Rate of Change of Momentum:
Rate of Change of Momentum = (Final Momentum - Initial Momentum) / Time
4. Acceleration of the Car:
Acceleration = -initial velocity / Time
5. Magnitude of the Force Applied:
Force = Mass × Acceleration
By substituting the given values into the formulas, you can find the answers to each of the questions above.
(1) 1600*30
(2) 0
(3) p = mv, so dp/dt = m dv/dt = 1600*(0-30)/(20-0) = -2400 kg-m/s
(4) see (3)
(5) F = ma