Answer:
Part A
-0.2kgm/s
Part B
+0.12m/s
Part C
-0.08kgm/s
Explanation
Momentum of a body is defined as the product of mass of the body band its velocity.
Momentum = mass × velocity
Change in momentum = m(v-u)
v is the final velocity of the body
u is the initial velocity of the body.
For cart A:
Mass m = 1.0kg
Initial velocity u = +0.70m/s(velocity before collision)
Final velocity' v = +0.5m/s(velocity after collision)
∆Momentum = 1(0.5-0.7)
= 1(-0.2)
= -0.2kgm/s
The x component of the change in the momentum of A is -0.2kgm/s
For cart B:
Similarly;
∆momentum = 0.1(1.6-0.4)
∆momentum = 0.1×1.2
∆momentum = +0.12kgm/s
The x component of the change in the momentum of B is +0.12kgm/s
Part C:
The sum of these two x components of the changes in momentum = (∆momentum)A + (∆momentum)B
= -0.2+0.12
= -0.08kgm/s
Boiling water has a lot more heat than the oven's air (even though the air has a higher temperature). ... A match has a greater temperature than the iceberg because the average molecule in the match is moving faster than the average molecule in the iceberg
The magnetic flux linked changes and an emf is induced. therefore,there is a current flow
Answer:
deceleration is the opposite of acceleration
Explanation:
We know that acceleration is the increase of speed with respect to time. So deceleration must be represented on the graph as a decrease in speed over time.a