Question

A ball is projected upward at time t=0.0s, from a point on a roof 80m above...

A ball is projected upward at time t=0.0s, from a point on a roof 80m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 31.1m/s if air resistance is negligible. the time when the ball strikes the ground is closest to:

A) 7.8 s

B) 8.9 s

C) 8.6 s

D) 8.3 s

E) 8.0 s

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 24 kg ball is projected upward at time t=0.0s, from a point on a roof...
A 24 kg ball is projected upward at time t=0.0s, from a point on a roof 66 m above the ground and experiences negligible air resistance. the ball rises, then falls and strikes the ground. the initial velocity of the ball is 10.6 m/s. Consider all quantities as positive in the upward direction. the speed of the ball when it is 39 m above the ground is closest to
A ball is projected upward at time t = 0.00 s, from a point on a...
A ball is projected upward at time t = 0.00 s, from a point on a roof 40 m above the ground and experiences negligible air resistance. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 84.9 m/s. Consider all quantities as positive in the upward direction. The velocity of the ball when it is 16 m above the ground is closest to
A 23 kg ball is projected upward at time t = 0.0 s, from a point...
A 23 kg ball is projected upward at time t = 0.0 s, from a point on a roof 76 m above the ground and experiences negligible air resistance. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 20.8 m/s. Consider all quantities as positive in the upward direction. You may assume the acceleration due to gravity is 9.8 m/s2. The speed of the ball when it is 17.6 m above the ground...
A ball with mass 1/9.8 kg is thrown upward with initial velocity 20 m/s from the...
A ball with mass 1/9.8 kg is thrown upward with initial velocity 20 m/s from the roof of a building 30 m high. Assume that the force of air resistance (drag force) is (v^2)/1225. Find the maximum height above the ground that the ball reaches. (Hint: find the velocity v(t) first, then find the height x(t).)
A ball with mass m kg is thrown upward with initial velocity 16 m/s from the...
A ball with mass m kg is thrown upward with initial velocity 16 m/s from the roof of a building 28 m high. Neglect air resistance. Use 9.8 m/s2. Round your answers to one decimal place. (a) Find the maximum height above the ground that the ball reaches. meters (b) Assuming that the ball misses the building on the way down, find the time that it hits the ground.
Robert throws a ball vertically upward from the edge of a 150m tall building. The ball...
Robert throws a ball vertically upward from the edge of a 150m tall building. The ball falls to the ground 9.5 s after leaving Roberts hand. Assume that the ball leaves Roberts hand when its 2 m above the roof of the building. Find the initial velocity of the ball and the maximum height of the ball and the time the ball reaches its max height?
ball weighing 1 pound is thrown vertically upward from a point 6 ft above the surface...
ball weighing 1 pound is thrown vertically upward from a point 6 ft above the surface of the earth with an initial velocity of 18 ft/sec. As it rises it is acted upon by air resistance that is numerically equal to (1/16)*v (in pounds) where v is the velocity (in feet per second). How high will the ball rise? NOTE: Before you attempt to answer, please take into consideration that this problem is for a Differential Equations class (NOT A...
1. While standing at the edge of a bridge, you throw a ball upward with an...
1. While standing at the edge of a bridge, you throw a ball upward with an initial speed of 12 m/s. The ball subsequently falls to the ground, which is 45 m below the point where the ball leaves your hand. (a) How much time is the ball in the air? (b) What is the velocity of the ball when it hits the ground? 2. An object is fired straight up at a speed of 12m/s. Calculate (a) its maximum...
A rock is projected upward from the surface of the moon, at time t = 0.0...
A rock is projected upward from the surface of the moon, at time t = 0.0 s, with a velocity of 30 m/s. The acceleration due to gravity at the surface of the moon is 1.62 m/s2. The height of the rock when it is descending with a velocity of 20 m/s is closest to
A ball is thrown from the roof of a building. The initial velocity vector is at...
A ball is thrown from the roof of a building. The initial velocity vector is at an angle of 53.0° above the horizontal. It is at maximum height in 1.04 seconds. Express all vectors in terms of unit vectors i and j. The ball strikes the ground at a horizontal distance from the building of 33.1 meters. a.) What is the vertical velocity (vector) at t=1.04 seconds? b.) What is the initial vertical velocity (vector)? c) What is the inital...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT