Velocity because It is defined as the change in the position with respect to the time. Velocity is a vector quantity that means it depends on the magnitude and direction of an object. The S.I unit of velocity is, m/s
Acceleration : It is defined as the rate of change of velocity of an object wit respect to the time. Acceleration is a vector quantity that means it depends on the magnitude and direction of an object. The S.I unit of acceleration is, m/s to the power of 2
Distance : It is defined as the how far an object has traveled in time. Distance is a scalar quantity that means it is depends on the magnitude of an object only. The S.I unit of distance is, m
Speed : It is defined as the distance traveled by an object in unit time. Speed is also a scalar quantity. The S.I unit of speed is, m/s
Mary traveled 70 miles/hour due north. This is an example of velocity. 70 miles/hour tell us about the magnitude of the object and north tell us about the direction of an object.
Hence, the correct option is, velocity.
Answer:
Explanation:
Position of the ball as a function of time is given as
now we know that when ball will attain maximum height then the differentiation of the position with respect to time will become zero
so we have
now the maximum height is given as
<h2>
The secondary voltage is 115 V.</h2>
Explanation:
The primary to secondary voltage ratio is given as 4:1 .
That is
We need to find what is the secondary voltage if the primary voltage is 460 volts.
That is
Substituting in ratio equation
The secondary voltage is 115 V.
Given :
A 1200 kg car travelling at 45 m/s slams on its breaks and slides to a stop.
If the coefficient of kinetic friction between the car and the road is 0.85 .
To Find :
How far the car slides.
Solution :
Acceleration is given by :
Distance covered is :
Therefore, distance covered is 119.12 m.
Hence, this is the required solution.
Answer:
The net torque is zero
Explanation:
Let's assume that the dipole is compose of two equal but oposite charges e, and it cam be represented by a rod with one end having a charge e and the other end with a charge of -e. Notice that the dipole is parallel to the electric field thus the force felt by both of the charges will be parallel to the electric field. This means that there will be no components of the forces that are perpendicular to the rod which is a requirement for it to have a torque.
