Answer:
Explanation:
Average speed is found by adding together the total distances traveled by the athlete and divide that total by the total time it took.
Average velocity is vector, which means it includes direction. If the athlete heads one way and then turns around, his displacement might actually be negative! Yikes! Let's look at speed first:
Velocity is the displacements added together divided by the total amount of time it took. The displacement is the same as the distance here, since the athlete did not veer off his straight-path and didn't turn around.
Average velocity = average speed = 533.3 m/min
Answer:
(a) 1 : 2
(b) same
Explanation:
Let the mass of puck A is m and the mass of puck B is 2 m.
initial speed for both the pucks is same as u and the distance is same for both is s.
let the tension is T for same.
The kinetic energy is given by
(a) As the speed is same, so the kinetic energy depends on the mass.
So, kinetic energy of A : Kinetic energy of B = m : 2m = 1 : 2
(b) A the distance s same so the final velocities are also same.
Answer:
The value is
Explanation:
From the question we are told that
The mass of the car is
The acceleration is
Generally the net force applied on the rope is mathematically represented as
Here W is the weight of the car which is evaluated as
=>
=>
Generally the net force can also be mathematically represented as
So
=>
=>