0
What speed must you toss a ball straight up so that it takes 4 s to return to you?
Wiki User
∙ 11y ago
To toss a ball straight up so that it takes 4.0 seconds to return to you, it must be thrown at a speed of 19.6 meters per second. This is because it will have a speed of zero at 2.0 seconds, therefore it must have a speed of 19.6 meters per second for gravity's 9.8 meters per second squared to slow it to zero in 2 seconds.
Wiki User
∙ 9y ago
First, determine the height the ball travels using the equation h = (1/2)gt^2, where h is the height, g is the acceleration due to gravity, and t is the time. Since it takes 4 seconds to return to you, the total time for the round trip is 8 seconds (4 seconds up and 4 seconds down). Then, set the height when the ball is released to the height when it returns. Finally, solve for the initial velocity needed to achieve this height in 4 seconds.
Wiki User
∙ 11y ago-- You want it to rise for 2 s and then fall for 2 s .
-- You know that gravity will decrease its upward speed by 9.8 meters per second
every second that it's in the air.
-- So you have to give it an initial upward speed of 19.6 meters per second in order
for it to continue rising for the first 2 seconds, before it runs out of upward gas.
That's about 43.9 miles per hour as it leaves your hand.
Add your answer:
Earn +20 pts
Which best describes the speed of a ball as it is thrown straight up into the air and comes back down?
The speed of the ball is greatest when it is thrown upward and decreases as it reaches the peak of its trajectory. The speed continues to decrease as the ball falls back down due to the force of gravity pulling it towards the ground.
A ball being thrown at 150kph takes how low to travel 20meters?
To calculate the time it takes for the ball to travel 20 meters, we first convert the speed to m/s: 150 km/h = 41.67 m/s. Then, we use the formula: time = distance/speed. Therefore, the ball takes approximately 0.48 seconds to travel 20 meters.
If a person in a train moving at high speeds threw a ball straight into the air would the ball continue at the same speed as the thrower or would it travel a different speed?
The ball would continue to move at the same speed as the train in the horizontal direction, but its vertical speed would be affected by gravity. The overall motion of the ball would be a combination of the horizontal motion at the speed of the train and the vertical motion due to gravity.
Is a ball rolling in a straight line at a constant speed in equilibrium?
No, the ball is not in equilibrium because it is in motion. Equilibrium refers to a state where the net force and net torque acting on an object are zero, leading to no overall change in motion. In the case of a ball rolling in a straight line at a constant speed, there is no net force acting on the ball, but it is not in equilibrium as it is in motion.
What is an example of constant motion?
An example of constant motion is a car driving at a constant speed on a straight road.
If a person in a train moving at high speeds threw a ball straight into the air would the ball continue at the same speed as the thrower or would it travel a different speed?
The ball would continue to move at the same speed as the train in the horizontal direction, but its vertical speed would be affected by gravity. The overall motion of the ball would be a combination of the horizontal motion at the speed of the train and the vertical motion due to gravity.
What is a bowling approach?
a bowling approach is the steps a person takes before actually throwing the ball. the approach is also the area that starts at the end of the ball return up to the foul line.
A baseball player hits a foul ball straight up in the air it leaves the the bat with the speed of 120 km in absence of air resistance how fast will the ball be traveling when the catcher catches it?
The ball will be traveling at the same speed when it returns to Earth.
When a ball is traveling at a constent speed around the inside of circular structure is the ball accerlerating?
Yes, the ball is undergoing acceleration even if it is moving at a constant speed. This is because its direction is changing as it moves around the circular structure, leading to a continuous change in velocity, which is a form of acceleration known as centripetal acceleration.
What bowling shot does not curve?
The straight ball.
If a soccer ball takes 20 seconds to roll 10 m what is the average speed of the soccerball?
== ==
A ball is thrown with enough speed straight up so that it is in the air several seconds What is the velocity of the ball when it gets to its highest point?
The velocity of the ball at its highest point is 0 m/s. At the highest point of its trajectory, the ball's vertical velocity slows to 0 before changing direction and starting to fall back down due to the force of gravity.
How fast should a fast ball go?
Speed doesn't matter for fast balls, what matters is if it's going straight or not.
How long will it take the ball to return to earth when it is thrown straight upward at 150' per second at the height of 5'?
OW! Not long enough!
Descrbe a real world situation where there is zero acceleration but some velocity.?
-- a car on cruise control rolling along at a constant speed on a straight section of highway -- a golf ball or squash ball rolling across the gym floor at a constant speed
What are some Softball pitching fundamentals?
stay on the power line keep arm straight stay up tall snap ball at hip fast arm speed turn hip stay on the power line keep arm straight stay up tall snap ball at hip fast arm speed turn hip
How do you get a speed ball in emerald?
speed ball is not avalible in emerald
