Mechanics | Relativity Answers

A bullet is shot from a rifle aimed horizontally at the same time a bullet is dropped from the same height as the gun's barrel. Which bullet hits the ground first?

As a projectile shot at an upward angle rises and falls what happens to its horizontal component of its velocity if we neglect air resistance?

if a airplane is flying with the speed of 500km per hour. In the plane there's a Bee. currently bee is sitting on the seat which is in the middle of the plane. if bee jump of the seat and remain in the flying state for 10 min at the same position does it will go backward to the plane ? because during flying she will not have any physical contact with the plane to constant its velocity with the plane..

An 879-kg (1943 lb) dragster, starting from rest, attains a speed of 25.4 m/s (56.9 mph) in 0.59 s. What is the average acceleration of the dragster during this time interval?

A 1500 electrical kettle is used to boil 1.0 L of water which was originally at 10 degrees Celsius it takes 5.0 min to boil what is the efficiency of the kettle

A nine-iron is used to pitch the ball up to a green that lies 8.23 meters above the fairway. If the ball’s take-off velocity was 22 meters per second at an angle of 57 degrees above horizontal. (6 marks)
a) What is the range of the shot?
b) What is the final vertical velocity of the ball upon landing?
c) What is the resultant velocity of the ball upon landing?

Is it possible to create a rocket with a variable blast diameter to achieve different levels of torque and power similar to a geared transmission?

I suppose the best analogy I have is the difference in power between a garden hose normally and when you plug it with your thumb, creating more pressure.

Would it be possible to have a rocket launch with maximum diameter, and slowly close up like a camera shutter to gain speed once in the air? Perhaps this shudder would be angled like a funnel to direct the blast easier. All the rockets I see have a fixed diameter and it just makes me curious.

A zookeeper finds an escaped monkey hanging from a light pole 4.5 meters high. Aiming her gun at the monkey, the zookeeper kneels 12.0 meters from the pole. The tip of her gun is .75 meter above the ground. the monkey tries to trick the zookeeper by dropping a banana, then continues to hold onto the pole. When the monkey releases the banana, the sookeeper shoots. If the bullet travels 45.0 m/s, will it hit the monkey, the banana, or neither one?

Freddy Frog drops vertically from a tree onto a horizontally moving skateboard. The skateboard slows. Give two reasons for this, one in terms of a horizontal friction force between Freddy’s feet and the skateboard, and one in terms of momentum conservation.

Hello, I have a question that I've been trying to answer for some time now and it sounds like this: How can you demonstrate the following formula: P=v^2/16, whereas P=wind pressure and v=wind speed.

Thank you!