हिंदी
तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ७

What do you mean by constant acceleration? - Science

Advertisements
Advertisements

प्रश्न

What do you mean by constant acceleration?

टिप्पणी लिखिए

उत्तर

A body is said to have constant acceleration, if it travels is a straight line and its velocity increases or decreases by equal magnitude in equal intervals of time.
Ex: the motion of a freely falling body.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Force and Motion - Evaluation [पृष्ठ २६]

APPEARS IN

सामाचीर कलवी Science - Term 1 [English] Class 7 TN Board
अध्याय 2 Force and Motion
Evaluation | Q VI. 3. | पृष्ठ २६

संबंधित प्रश्न

An object of mass 16 kg is moving with an acceleration of 3 m/s2. Calculate the applied force. If the same force is applied to an object of mass 24 kg, how much will be the acceleration?


A toy car initially moving with uniform velocity of 18 km h-1 comes to a stop in 2 s. Find the retardation of the car in S.I. units.


State the type of motion represented by the following sketches in Figures.

Give an example of each type of motion.


A space craft flying in a straight course with velocity of 75 km s-1 fires its rocket motors for 6.0 s. At the end of this time its speed is 120 km s-1 in the same direction.

Find

(i) The space craft's average acceleration while the motors were firing

(ii) The distance travelled by the space craft in the first 10 s after the rocket motors were started, the motors being in action for only 6 s.


If a body is moving with a constant velocity its acceleration is ______.


State its value in C.G.S. as well as in S.I. system.


From the diagram given below, calculate acceleration.


A racing car, initially at rest, picks up a velocity of 180 kmh−1 in 4.5 s. Calculate

  1. acceleration
  2. distance covered by the car.

A body falls towards the earth. Does it have positive or negative acceleration?


Can you use the relation [B1]?


The initial velocity of a car is 10 ms-1. It moves with an acceleration of 2 ms-2. What will be its speed after 10 seconds?


State if the following situation is possible:
A body moving horizontally with an acceleration in vertical direction.


Is it possible for an accelerating body to have constant speed?


Convert the following acceleration:
7200 km/h2 into m/s2


Figure represents graphically the velocity of a car moving along a straight road over a period of 100 hours.

Calculate the acceleration along AB and the retardation along BC.


Assertion: The accelerated motion of an object may be due to change in magnitude of velocity or direction or both of them.

Reason: Acceleration can be produced only by change in magnitude of the velocity. It does not depend the direction.


The speed of a particle is constant. Will it have acceleration? Justify with an example.


A bus accelerating with 4ms-2 changes its speed from 60ms_1 to a certain value in 5s. The final speed is ______.


It is possible to have objects moving with uniform speed but variable acceleration.


What is the difference between uniform acceleration and non–uniform acceleration?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×