Question

A ball is thrown upward from the top of a 24.2 m tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 32.8 m from the building. What must be the average speed of the person if he is to catch the ball at the bottom of the building?

Step 1

Taking sign of motion in the upward direction as positive.

Given,

Step 2

From the third kinematic equation of motion.

Step 3

The ball thrown from the building will reach the ground in 3.76 second. If a person runs hor...

Tagged in

Q: How long does it take electrons to get from a car battery to the starting motor? Assume the current ...

A: Given Information :Current I =290 ACross sectional area of the copper wire A = 0.260 cm2=Length of t...

Q: A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-power...

A: The work done on the jet by the catapult can be calculated using given steps:Given:

Q: The figure shows particles 1 and 2, each of mass m, attached to the ends of a rigid massless rod of ...

A: Given that the mass of both particles is m. The torque acting on an object is the product of force a...

Q: A rock is tossed straight up with a speed of 26 m/s . When it returns, it falls into a hole 12 mdeep...

A: Write the kinematic relation between initial and final velocity

Q: A child does 350 J of work while pulling a box from the ground up to his tree house at a steady spee...

A: The work done to place the box at tree house=350 J.The distance from ground to tree house =4.0 m.The...

Q: Chapter 27, Problem 007 from A wire of resistance 5.1 Ω is connected to a battery whose emf ε is 4.0...

A: (a)Write the expression for energy transferred from chemical to electrical form.

Q: A bowling ball (mass=7.2 kg, radius=0.11 m) and a billiard ball (mass=0.38 kg, radius=0.028 m) may e...

A: Let m1 and m2 be the mass of bowling ball and billiards ball respectively.Let r1 and r2 be the radiu...

Q: 26. An 80.0-kg skydiver jumps out of a balloon at an alti- tude of 1 000 m and opens his parachute a...

A: (a)Without parachute, the acceleration is,

Q: It takes 156 kJ of work to accelerate a car from 20.4 m/s to 28.2 m/s. What is the car's mass?

A: The mass of the car can be calculated in given steps:Given:

Sorry about that. What wasn’t helpful?