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Questions in physics

[Answered] Q2. In a 4x100 m relay race, the total track length is 200 m, and the time taken by one particular group is 50.2 s. What is the average speed and average velocity of that group?

[Answered] Q1. In a 100m track event, the time taken by four runners is 10 sec, 10.2 sec, 10.4 sec, and 10.6 sec. Find the ratio of their speeds.

[Answered] Explain scientifically in detail how a spoon can sound like a bell.

[Answered] A 1.0 kg book is lifted 0.5 m above the table, and the table is 1.0 m above the floor. What would be the potential energy (P.E.) of the book if the reference level is the floor?

[Answered] A ball of mass 2 kg is kept on a hill of height 3 km. Calculate the potential energy possessed by it. How can I get the potential energy?

[Answered] You're conducting a physics experiment on another planet. You drop a rock from a height of 1 m, and it hits the ground 0.4 seconds later. What is the acceleration due to gravity on this planet?

[Answered] You measure that it takes 0.75 seconds for a leaf to fall from a tree to the ground. The leaf experiences air resistance as it falls. If there were no air resistance, how long would it take the leaf to fall?

[Answered] You kick a ball with a speed of 14 m/s at an angle of 51°. How far away does the ball land?

[Answered] A kitten pushes a ball of yarn rolling toward it at 1.00 cm/s with its nose, displacing the ball of yarn 17.5 cm in the opposite direction in 2.00 s. What is the acceleration of the ball of yarn?

[Answered] Suppose a rocket ship in deep space moves with constant acceleration equal to [tex]9.8 \, \text{m/s}^2[/tex], which gives the illusion of normal gravity during the flight. (a) If it starts from rest, how long will it take to acquire a speed one-tenth that of light, which travels at [tex]3.0 \times 10^8 \, \text{m/s}[/tex]? (b) How far will it travel in so doing?