A projectile is launched at an angle into the air at velocity v and angle θ. Determine its vertical acceleration.
2 answers:
When you're dealing with projectile problems, you have two dimensions: an x (horizontal) dimension and a y (vertical) dimension. The only force that will be acting upon a projectile in the air is the force of gravity, which points down in the y/vertical dimension.
Gravity causes a downward vertical acceleration of
.
The velocity and angle do not affect the vertical acceleration.
Gravity causes a downward vertical acceleration of
The velocity and angle do not affect the vertical acceleration.
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Answer:
W = 1250 J = 1.25 KJ
Explanation:
The work done by the boy is due to the change in the position of the cement vertically. Hence, the work done in this case will be equal to the potential energy of the cement:
where,
W = Work done = ?
mg = W = weight of cement = 500 N
h = height covered = 2.5 m
Therefore,
<u>W = 1250 J = 1.25 KJ</u>
Answer:
Loss,
Explanation:
Given that,
Mass of particle 1,
Mass of particle 2,
Speed of particle 1,
Speed of particle 2,
To find,
The magnitude of the loss in kinetic energy after the collision.
Solve,
Two particles stick together in case of inelastic collision. Due to this, some of the kinetic energy gets lost.
Applying the conservation of momentum to find the speed of two particles after the collision.
V = 6.71 m/s
Initial kinetic energy before the collision,
Final kinetic energy after the collision,
Lost in kinetic energy,
Therefore, the magnitude of the loss in kinetic energy after the collision is 10.63 Joules.