Mechanics | Relativity Answers

Average Vector Speed, Truck You stopped 8.4km while driving, moving 8.4km at a speed of 70km / h and stopped short of fuel. You left the vehicle and walked 30 minutes to the gas station 2.0 km away.
1
(a) Find the total transition from moving the truck to the gas station? (b) Find the interval Dr for the first time you move the truck to the gas station?

A football quarterback shows off his skill by throwing a pass 45.20m downfield and into a bucket. The quarterback consistently launches the ball at 38.00degrees above horizontal, and the bucket is placed at the same level from which the ball is thrown.

QA) What initial speed is needed so that the ball lands in the bucket?

QB) By how much would the launch speed have to increase if the bucket is moved to 47.80m downfield?

You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. The soccer ball is kicked at 33° from the edge of the building with an initial velocity of 21 m/s and lands 65 meters away from the wall. How tall, in meters, is the building that the child is standing on?

A small radio controlled car is moving to the right at 14 m/s at t=0s, with a constant acceleration of 2.0 m/s2 [L]. FIND:
The velocity of the car at t=6.0s
How long it takes the car to come to a rest.
At what time is the displacement of the car is equal to 40.0 m [R]

A ball is thrown into the air with an upward velocity of 50.0 m/s at t=0s. If acceleration due to gravity is 9.8m/s2, FIND:
The velocity of the ball at:
t = 4.0s
t = 6.0s
how long it takes to reach its maximum height
the maximum height reached by the ball
the acceleration of the ball at its maximum height
The displacement of the ball during the second second of its flight.

A body of mass 25 gm is attached with a spring of spring constant 400 dynes/cm. The body is displaced by 10cm from its equilibrium position and released. Then the body executes simple harmonic motion. Calculate (i) the time period, (ii) frequency, (iii) angular frequency, (iv) maximum velocity, and (v) maximum acceleration.

A car travels with a speed of 20m/s to east.at t=0,the driver sees a bus coming 100m behind with a speed of 25m/s breaks immediately and decelerates uniformly for 2s.After a time t after applying breaks,the bus passes the car and car travels with the same speed which it had. (Take the speed of car after deceleration as u)
1.write an expression for the deceleration of the car in terms of u and t
2.when the bus passes the car,write an expression for the distance travelled by car

Velocity of a particle is expressed as
Vx=40-5t² m/s.
(a) find average acceleration.
(b)find instantaneous acceleration.
(C)Draw the graph of this question.

Ali walks 680m south 780m east 80m south find the distance and the displacement?

A car is travelling at a constant speed of 11m/s. Passes a trooper hidden behind a Billboard one second of the car passes the Billboard, the trooper sets out from the Billboard to catch it, acelerating at a constant speed of 22m/s².how long does it take her to take the car?