A stone is thrown upward with an initial velocity of 25 m/s at an angle of 30° to the ground.
A) show that the vertical component of the velocity at the start is 12.5 m/s upwards.
B)with out doing any calculations, state what the stone's vertical velocity will be when it again reaches ground level.
(A) 25 sin30° = 25 * 1/2
(B) same as when it went up, but downward.
Stone thrown upwords with the initial velocity if 25 at the angle 30 to the ground
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pls can u teach me how to answer the question
A) To calculate the vertical component of the velocity at the start, we need to consider the initial velocity of 25 m/s and the angle of 30°. The vertical component of the velocity can be determined using simple trigonometry.
The formula to find the vertical component of the velocity is given by:
Vertical velocity = Initial velocity * Sin(angle)
Plugging in the given values, we have:
Vertical velocity = 25 * Sin(30°)
Calculating the value of Sin(30°) (which is equal to 0.5), we get:
Vertical velocity = 25 * 0.5
Vertical velocity = 12.5 m/s
Therefore, the vertical component of the velocity at the start is 12.5 m/s upwards.
B) Without doing any calculations, we can determine the stone's vertical velocity when it reaches ground level by considering the path it follows. Since the stone is thrown upwards, it will follow a parabolic path and eventually come back down to the ground.
At the highest point of its trajectory, the stone's vertical velocity becomes zero because it momentarily stops before reversing its direction. This implies that the stone's vertical velocity when it reaches ground level will be the same as its initial vertical velocity, but with the opposite direction.
Therefore, without doing any calculations, we can state that the stone's vertical velocity when it again reaches ground level will be 12.5 m/s but in the downward direction.
physics
Astone is thrown upwards with onitial velocity of 25m/s at angle of 39° to ground.
A)show that the vertical component of the velocity at the start is 12.5m/s upwards
B)with out doing any calculation , state what the stone's vertical velocity will be when it again reaches ground level.