Answer: In science collisions can be elastic, meaning they conserve both momentum and kinetic energy, or inelastic, meaning they conserve momentum but not kinetic energy.
Explanation: I hope that helped yall!
We can use the formula:
acceleration = change in velocity / time
a = (9 - 4) / 0.5
a = 10 mi/h²
Now, we will also check the units. In the numerator was mi/h and the denominator was h so the units become mi/h².
Answer: 5.91kw
Explanation:
given data:
power = 65kw
voltage stepped up = 120v t0 1200
R 0.100
<u>Solution:</u>
when the it is stepped to 120v
power loss
when it is stepped to 1200v
total power saved
Answer:
40 m/s North
Explanation:
m = 10 kg
u = 4 m/s North = 4 j
m1 = 5 kg
v1 = 8 m/s west = - 8 i
m2 = 4 kg
v2 = 10 m/s east = 10 i
m3 = m - m1 - m2 = 10 - 5 - 4 = 1 kg
Let the velocity of third fragment is v3 = v
Using the conservation of momentum
m x u = m1 x v1 + m2 x v2 + m3 x v3
10 x 4 j = 5 x (- 8i) + 4 x 10 i + 1 x v3
40 j = - 40 i + 40 i + v3
v3 = 40 j
Thus, the third fragment moves in the direction of north with velocity 40 m/s
Answer:
The correct Option is (a) please see attachment containing complete question.
Explanation:
1) The motion is basic to and fro motion of an object.
2) Considering the motion as Simple Harmonic Motion (SHM), the graph tells us that the pendulum appears to be moving to the left and slowing down being acted upon positive acceleration.
3) Reaching the left extreme, it stops i.e. V = 0 m/s, and then starts moving to the right due to the component of gravity (g), speeding up.