Related Questions to study
science
A biker takes 2.5 laps of a circular track of radius 7 m. Her distance and displacement are ___ m and ___ m respectively.
A biker takes 2.5 laps of a circular track of radius 7 m. Her distance and displacement are ___ m and ___ m respectively.
scienceGrade-9
science
A car covers the first 200 m in 30 seconds and the next 400 m in 30 seconds. Its average speed is ___ m/s.
A car covers the first 200 m in 30 seconds and the next 400 m in 30 seconds. Its average speed is ___ m/s.
scienceGrade-9
science
An athlete running at a velocity of 5 m/s slows down to 2 m/s in 3 seconds. Her acceleration is ___ m/s2.
An athlete running at a velocity of 5 m/s slows down to 2 m/s in 3 seconds. Her acceleration is ___ m/s2.
scienceGrade-9
science
A bus moves in such a way that its velocity increases by 9 m/s every second. What is its acceleration?
A bus moves in such a way that its velocity increases by 9 m/s every second. What is its acceleration?
scienceGrade-9
science
An object in a uniform motion ___.
An object in a uniform motion ___.
scienceGrade-9
science
Peter wants to modify the formula for acceleration
i.e., a = (v – u)/ t
Where v = final velocity, u = initial velocity, t= time, a = acceleration, to suit the special case of freefall of a ball dropped from the top of a building. He chooses to make the following substitutions in the formula.
a. v= 0
b. u= 0
c. a= 9.8 m/s2
Identify the correct substitutions.
Peter wants to modify the formula for acceleration
i.e., a = (v – u)/ t
Where v = final velocity, u = initial velocity, t= time, a = acceleration, to suit the special case of freefall of a ball dropped from the top of a building. He chooses to make the following substitutions in the formula.
a. v= 0
b. u= 0
c. a= 9.8 m/s2
Identify the correct substitutions.
scienceGrade-9
science
A car is moving at a speed of 5 m/s in the same direction throughout its motion. Which of the following is true about its motion?
A car is moving at a speed of 5 m/s in the same direction throughout its motion. Which of the following is true about its motion?
scienceGrade-9
science
Which of the following value(s) can distance take?
Which of the following value(s) can distance take?
scienceGrade-9
science
An object falling from the top of a building reaches a velocity of ___ m/s in 20 s.
An object falling from the top of a building reaches a velocity of ___ m/s in 20 s.
scienceGrade-9
science
A train starts from rest and picks up a velocity of 20 m/s in 4 s. The acceleration of the train is ___ m/s2.
A train starts from rest and picks up a velocity of 20 m/s in 4 s. The acceleration of the train is ___ m/s2.
scienceGrade-9
science
A car is moving at a speed of 20 m/s towards east. In which of the following cases its velocity is said to be changed?
A car is moving at a speed of 20 m/s towards east. In which of the following cases its velocity is said to be changed?
scienceGrade-9
science
A person runs around a square park of side 10 m, 4 times. What is the distance and displacement covered by the person ?
A person runs around a square park of side 10 m, 4 times. What is the distance and displacement covered by the person ?
scienceGrade-9
science
The driver of a car moving at a velocity of 50 m/s applies brakes and eventually stops after 10 s. What is the acceleration of the car?
The driver of a car moving at a velocity of 50 m/s applies brakes and eventually stops after 10 s. What is the acceleration of the car?
scienceGrade-9
science
An object is moving in a non-uniform motion. Which of the following physical quantities gives the measure of the rate of motion?
An object is moving in a non-uniform motion. Which of the following physical quantities gives the measure of the rate of motion?
scienceGrade-9
science
Which of the following remains constant in a uniform circular motion?
Which of the following remains constant in a uniform circular motion?
scienceGrade-9
