What is momentum of body at highest point?
Discussion
- Sravanthi -Posted on 15 Dec 15.
- Given: Mass of body = 2 kg, velocity = 15 m/s, θ = 70°
- Formula: 1) At highest point velocity = u cos θ 2) Momentum = mass x velocity.
- Solution: 1) At highest point velocity = 15 x cos 70. = 5.13 m/s. 2) Momentum = mass x velocity. = 2 x 5.13. = 10.26 kg ms-1
Does a ball have maximum momentum at its highest point?
Therefore, at maximum altitude the velocity of the ball must be zero. Question: A ball thrown vertically upward reaches a maximum height of 30 meters above the surface of Earth. At its maximum height, the speed of the ball is: Answer: 0 m/s….Objects Launched Upward.
| Variable | Value |
|---|---|
| t | 0.40 s |
What happens when a ball reaches its highest point?
Acceleration from gravity is always constant and downward, but the direction and magnitude of velocity change. At the highest point in its trajectory, the ball has zero velocity, and the magnitude of velocity increases again as the ball falls back toward the earth (see figure 1).
When a ball is thrown straight up by how much does the speed decrease each second?
10 m/s
How high is the average skydive?
10,000 feet
Is it possible for an object to be accelerating when its speed is zero?
b) Can an object be accelerating when its speed is zero? Yes, acceleration is a change in velocity, so an object might be momentarily at rest but a split-second later have some speed, i.e. it can be changing its velocity even if it is momentarily at rest.
How do you know if acceleration is zero?
When acceleration is zero (that is, a = dv/dt = 0), rate of change of velocity is zero. That is, acceleration is zero when the velocity of the object is constant. Motion graphs represent the variations in distance, velocity and acceleration with time.
What is the acceleration of a ball at its maximum height?
At a projectile’s highest point, its velocity is zero. At a projectile’s highest point, its acceleration is zero.
How do you know when a ball reaches its maximum height?
1 Expert Answer So the highest point on the parabola is when x=3, or in our case t=3. So the ball reaches its maximum height after 3 seconds.
When a body is thrown vertically upward What will be the velocity and acceleration at maximum height?
acceleration is not zero but velocity is zero. both acceleration and velocity are zero. both acceleration and velocity are not zero.
What is the speed at maximum height?
When a projectile reaches maximum height, the vertical component of its velocity is momentarily zero (vy = 0 m/s).
What is the maximum height of the object?
Maximum height of the object is the highest vertical position along its trajectory. The object is flying upwards before reaching the highest point – and it’s falling after that point. It means that at the highest point of projectile motion, the vertical velocity is equal to 0 (Vy = 0).
How do you find velocity vector at maximum height?
The maximum height of an object, given the initial launch angle and initial velocity is found with:h=v2isin2θi2g h = v i 2 sin 2 θ i 2 g .
What happens to acceleration when velocity is maximum?
So, when velocity is maximum, acceleration is minimum (zero).
Is it possible to have 0 velocity and still be accelerating?
Yes, an object can have zero velocity and still be accelerating simultaneously. Let us consider an object moving in the forward direction. Now, suddenly a force acts on it and tries to accelerate the object in the reversed direction.
Where the velocity of an object is zero but its acceleration is not zero?
Answer. In case of a vertically projected body at the maximum height, its velocity is zero but it has acceleration due to gravity in the downward direction.
Can a body have non zero net force with zero velocity?
Answer: No, if the net force acting on a body be zero, then the body won’t necessarily be in the rest position. The situation of the net force equal to zero is impossible in reality. When the net force of the body is equal to zero, it implies that the body cannot be accelerated.
Will the next force be equal to zero?
The net force is the vector sum of all the forces acting on an object. When an object is in equilibrium (either at rest or moving with constant velocity), the net force acting on it zero. A vector can only have zero magnitude if all of its components are zero.
What is the force at constant velocity?
If a body is moving with constant velocity, acceleration is zero. So net force acting on it will be also zero. But the body has energy due to its constant motion.
What keeps the object remain at rest answer?
Inertia is a force which keeps stationary objects at rest and moving objects in motion at constant velocity. Inertia is a force which brings all objects to a rest position.