Answer: 8.75 km/hr
Explanation:
Concept to know
Average speed: total distance/total time
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total distance/total time
=(12.2+19.3)/(1.4+2.2) ⇔ add the numbers of two time running together
=31.5/3.6 ⇔ simplify
=8.75 km/hr
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Answer:
Explanation:
Given
mass of crate
Magnitude of friction
Inclination of Force
Force cos component will move the Block
Answer:
option C
Explanation:
The correct answer is option C.
For negative velocity
Negative velocity is when the velocity of the object in a negative direction.
so, for the velocity of the car to be negative, it should be in -x-direction.
For positive acceleration
Positive acceleration is the change of the velocity of the object with respect to time in a positive direction
but when the velocity of the object is in negative direction the slowing down of the vehicle will give positive acceleration.
hence, the correct answer is an option -x-direction decreasing in speed.
Answer:
As the cars ascend the next hill, some kinetic energy is transformed back into potential energy. Then, when the cars descend this hill, potential energy is again changed to kinetic energy. This conversion between potential and kinetic energy continues throughout the ride.
Explanation:
hope it helps U
Answer:
Can you give me a better explantion
Explanation: