How do you find the velocity?
Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), represented by the equation r = d/Δt.
What is acceleration A car starting from rest acquires a velocity of 54 km per hour in 5 seconds calculate its acceleration 3?
Hence, the acceleration of the car is 7.5 m/s².
What will be the acceleration of a car if it shows from 90 km/h to a stop in 10 sec?
Question 1: What will be the Acceleration of a Car if it Slows from 90 kmph to a Stop in 10 sec? Answer: Here, u = 90 kmph = 90 x 5/18 = 25 m/s because initially it was moving at a speed of 90 kmph then reached zero.
Which of the following equations give us the relation between position of the object and time taken?
s = ut + ½ at² represents the position-time relation.
What is the formula for final velocity?
Final velocity (v) of an object equals initial velocity (u) of that object plus acceleration (a) of the object times the elapsed time (t) from u to v. Use standard gravity, a = 9.80665 m/s2, for equations involving the Earth’s gravitational force as the acceleration rate of an object.
How much force is required to produce an acceleration of 5ms 2 in a body of mass 0.8 kg?
Therefore, Force of 1.6 N is required to accelerate the body.
What is SI unit of velocity?
The SI unit of velocity is m/s.
What is acceleration according to class 9?
Class 9 Physics Motion. Acceleration. Acceleration. Acceleration: It is a measure of the change in the velocity of an object per unit time. Acceleration can be caused either by change in direction of motion or change in speed or both.
What are the 4 types of acceleration?
Any change in the velocity of an object results in an acceleration: increasing speed (what people usually mean when they say acceleration), decreasing speed (also called deceleration or retardation ), or changing direction (called centripetal acceleration ).
What are the 5 equations of motion?
Equations of Motion
| Variable | Equation |
|---|---|
| Velocity | v, equals, u, plus, a, t,v=u+at |
| Displacement with positive acceleration | s, equals, u, t, plus, one half, a, t, squared,s=ut+21at2 |
| Displacement with negative acceleration | s, equals, v, t, minus, one half, a, t, squared,s=vt−21at2 |
Which of the above equation is known as position-time relationship?
Summary
| traditional name | equation | relationship |
|---|---|---|
| 1st equation | v = v0 + at | velocity-time |
| 2nd equation | s = s0 + v0t + ½at2 | position-time |
| 3rd equation | v2 = v02 + 2a(s − s0) | velocity-position |
| merton rule | v = ½(v + v0) | average velocity |