No, both the cars do not have the same velocity.
Velocity is a vector quantity and it is the rate of change of displacement with time or change in speed with direction.
Velocity has both magnitude and direction. So when you are in a car going 70 km/h and another car goes in the opposite direction at 70 km/h their velocities are different.
How?
Consider your car as moving in the positive direction, so its velocity will be 70 km/h and for the car moving in the opposite direction, since the direction is opposite, the velocity of that car will be -70 km/h. This is because, the velocity is a vector quantity that has both magnitude and direction. For one car, the direction is positive and for the other one the direction is negative.
Using the formula:
w = m x g ....... eq1
here w is weight of the object.
m is mass of the object, and
g is the acceleration of gravity.
mass, m = 14 lbm (given)
acceleration of gravity, g= 32.0 ft/
Now, substituting the values in equation (1):
w = 14lbm x 32.0 ft/ = 448 lbm ft/
since, 1 lbf = 32.174 lbm ft/
so, w = 448 x
w = 13.924lbf
Hence, the mass of an object is 13.924 lbf.
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<span>Move electrons from the inner shell to the outer shell
</span>
Answer:
<h2>Part a)</h2><h2>Momentum transferred by the ball</h2><h2>
</h2><h2>Part b)</h2><h2>Change in the velocity of the ball is</h2><h2>
</h2>
Explanation:
Velocity of the stone just before it will strike the Earth is given as
so we will have
Now by momentum conservation
Part a)
Momentum transferred by the stone is given as
Part b)
Change in velocity of Earth
Answer:
Staying the same unless, another force acts upon it
Explanation:
An object will stay still or keep moving at the same pace and in a straight line until acted upon by an external force that is unbalanced.