| Variable Value | Δy FIND | a -9.8 m/s 2 | t 0.40 s |
|---|
When you throw a ball vertically upward at its highest point of motion?
When a body is thrown vertically upwards, at the highest point_____ (both velocity and acceleration are zero/only velocity is zero/only acceleration is zero).
What is the acceleration of a ball when it reaches its highest point?
At a projectile’s highest point, its
acceleration is zero
.
What is the acceleration of an object thrown upward at its highest point?
And the acceleration due to gravity is constant on the object thoughout its flight. So the acceleration of the projectile is equal to the acceleration due to gravity,
9.81 meters/second/second
, from just after its thrown, through its highest point, and until just before it hits the ground.
When a ball is thrown upward with no air resistance the acceleration at its highest point?
Zero
. At its highest, the upward motion declines to zero velocity up and the downward motion is just starting from zero velocity down. So the velocity is not changing, and hence is constant. A velocity that is not changing is zero acceleration.
What is its acceleration when it reaches its highest point and is stopped at an instant?
When you throw a ball up in the air, its direction/velocity on the way up, although it rises up into the air, is actually downward. On its way up, its speed decreases, until it momentarily stops at the very top of the ball s motion. Its acceleration is
-9.8 m/s^2
at the very top.
What is the acceleration of the ball after 1 second?
After 1 second, the velocity is 4.5+1.5=
6 m/s
.
Why does a ball thrown vertically upward fall down?
When you throw an object upwards, it
will eventually fall back to the ground under the earth’s gravity
. … An object that is thrown vertically upwards decelerates under the earth’s gravity. Its speed decreases until it attains a maximum height, where the velocity is zero.
How long does it take for the ball to reach its maximum height?
It takes
about 88 seconds
for the cannonball to reach its maximum height (ignoring air resistance). You have 176 seconds, or 2 minutes and 56 seconds, until the cannonball destroys the cannon that fired it.
What will be the velocity and acceleration of ball upward at maximum height?
At the maximum height
velocity becomes zero
. Therefore, velocity at the top is zero and acceleration is acceleration due to gravity (g).
Is acceleration positive or negative going up?
The
acceleration due to gravity is ALWAYS negative
. Any object affected only by gravity (a projectile or an object in free fall) has an acceleration of -9.81 m/s
2
, regardless of the direction. The acceleration is negative when going up because the speed is decreasing.
Which ball will hit the ground first?
The correct answer is
the last one
: the two will hit the ground at the exact same time. This is because gravity accelerates all objects equally, even if one object is heavier than the other. mini cucumber, a rock and pebble and they all have the same result.
Is acceleration zero at the turn around point?
4. Acceleration is always smaller then velocity. A point where an object reverses its direction.
At a turning point, its velocity is zero
.
What is its speed at its highest point?
At its maximum height, the speed of the ball is: Answer:
0 m/s
. The instantaneous speed of any projectile at its maximum height is zero.
When you throw a pebble straight up with initial speed v it reaches?
When you throw a pebble straight up with initial speed V, it reaches a
maximum height H with no air resistance
.
When a ball player throws a ball straight up by how much does the speed?
When a ball player throws a ball straight up by how much does the speed? As gravity acts down to earth and the ball is going up, speed ́s ball will be decreasing by gravity ( 9.8 m/sec2) That means the speed of the ball will be decreasing 9.8 m/sec,
each second
.
