<span>Drought
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Answer:
The distance from the building is 11.41 m.
Explanation:
Given that,
Speed = 30.0 m/s
Angle = 45.0°
Distance = 10.0 m
We need to calculate the vertical component
Using formula of vertical component
We need to calculate the time
Using equation of motion
Put the value into the formula
On neglecting of higher value of t
Then use the horizontal component
We need to calculate the distance
Put the value into the formula
Hence, The distance from the building is 11.41 m.
Here in this case we can use energy conservation law to find out the speed
As per energy conservation we know that
initial kinetic energy + initial potential energy = final kinetic energy + final potential energy
so the speed of the pendulum bob is approx 2 m/s when it is 0.8 m above the floor
By Newton's Law of Universal Gravitation.
F = GMm/r²
Where F is Force of Gravitation, M = Mass of first object, m = mass of second object, r = distance of separation
From the formula, you can see that if the masses, M and m, increased, the value of F would definitely increase as well.
And if r increased the value of F would be reduced because you would be dividing by a bigger number, but when the value of r is decreased the value of F would be increased, because you would then be dividing by something smaller. Note the r is at the denominator of the formula.
So F would increase if there was increase in Masses and decrease in distance.
So the answer is C. a and b.
newton 1st law: w no external force, a body will stay at rest or in constant uniform motion.
a motor raises the car up the tower. cuz it moves w/ constant vel, there is no external force: the motor force is the same n in opposity direction as the gravity force on car.