Answer:
The same.
Explanation:
Temperature is a measure of the average kinetic energy of a substance; if two pieces of iron have the same temperature, then their particles will have the same amount of average kinetic energy.
Answer:
v= - 4.507 i - 2.363 j
Explanation:
Given that
mc= 1490 kg
vc= 9.5 m/s ( - i)
mt= 1650 kg
vt = 6.4 m/s ( -j)
There is any external force so linear momentum will remain conserve.
Lets take final speed is v.
mc .vc + mt . vt = ( mc+mt) v
1490 x 9.5 ( - i) + 1650 x 6.4 ( -j) = ( 1490+1650) v
14,155 ( -i) + 10,560 ( - j) = 3140 v
v= - 4.507 i - 2.363 j
Answer:
B. The larger force causes more acceleration than the smaller.
Explanation:
For example, let me use a child and a grown up. The child represents the smaller force while the grown up represents the larger force. If they are pushing the same object of different sides, obviously the side with the grown up will push and move to the side of the child because it is stronger.
Answer: 4850N
Explanation:
Mass of car = 970 kg
Time = 5 s
Speed = 25 m/s
Average force exerted on the car = ?
Recall that Force is the product of the mass of an object and the acceleration by which it moves
i.e Force = mass x acceleration
(Since, acceleration is the rate of change of velocity or speed per unit time)
i.e Acceleration = Speed / Time
Acc = 25m/s / 5s
Acc = 5m/s^2
Average force = mass x acceleration
Avg force = 970 kg x 5m/s^2
= 4850N
Thus, the average force exerted on the car is 4850 Newton
