Kinematics problems and solutions



1) Given that v=10+3t, (in S.I.Units) using this equation find acceleration ?

2)Given that s=ut+1÷2(at2), (S.I.Units) using this equation find initial velocity?

3)A car moving with a speed of 20m/s can be stopped by applying brakes, after travelling a distance of 10m. The negative Acceleration of the car?

4) A bus travelling with velocity of 54 kmph is brought to rest by applying brakes. It experiences a uniform retardation of 5m/s2. Before coming to rest, how much distance travelled by the bus?

5) A man initially at rest starts moving with a uniform acceleration 'a'. The ratio of the distances covered by it in the first second  and the first four seconds is ?

You see this solutions in below video. 



1) If a car having an initial velocity 4 m/s,  moves with a uniform acceleration of 2 metre per second square, then the final velocity when it covers a distance of 5 metres is ?                         

2)A bus starts from rest with uniform acceleration. It travels a distance of X in the first 2 seconds and a distance of  Y in the first 4 seconds. Then what is relation between X and Y ?   
                    
 3)A body starts with an initial velocity of 20 m/s and moves with a uniform acceleration. It attains a velocity of 40 m/s in 5s. The time taken by the body from here  onwords to acquire a velocity of 80 m/s is ?      

 4)The average velocity of a body moving with uniform acceleration after travelling a distance of 10 m is 4 m/s. If the change in velocity of the body is 2 m/s, then its acceleration is ? 
     
You see solutions below video 





1)A car starts from rest and moves with uniform acceleration of 4 m/s2 for 6 seconds. From that time the acceleration ceases. Find the distance covered in 10 second starting from rest? 

2)The two ends of a train moving with uniform acceleration covers a certain point with velocity V1 and V2. Find the velocity with which the middle point of the train passes the same point?

3) A scooter can produce a maximum acceleration of 2 m/s2. Its breaks can produce a maximum retardation of 8 m/s2. The minimum time in which it can cover a distance of 1.4 kilometre is? 


For solutions see the below video
           
PRACTICE QUESTIONS FOR STUDENTS

1) Given that v=2-3t (in S.I.Units) using this equation. Find initial velocity and Acceleration?

2)A bus moving with a speed of 5 metre for second can be stopped by applying brakes, after travelling a distance of 2 metres. The acceleration of the bus ?

3) A bus moved 100metres distance during time interval 2 hours, its change in velocity- 20 metre per second. find what is retardation of the bus ?

4)A car moved X metres distance during time interval 1 hour, its change in velocity 30 metre per second. What is acceleration of the car?

5)A bus moving with uniform acceleration 5 metre per second square, its change in velocity 20 metre per second. So, what is time taken  by the bus ?
         
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