Question

Numerical

Q1. A car travels with speed 30km /h for 30mins .and then with speed 40km/h for one hour find the
total distance traveled by the car
Q2. A car travels for 11/2 hour with a constant speed of 65 km/h and then travels for 45 minutes with
a constant speed of 80 km/h. What distance did the
vehicle cover?
Q3. A train is accelerating at a rate 2m/s. If its initial velocity is 20m/s, what is its velocity after 30
seconds?
Q4. A truck travel some distance at a speed of 30 km/h in 120 min and remaining distance speed of
48 km/h in 90 min determine the 
      (a) Total distance covered   
(b) Average speed over the entire journey
Q5. Ritij cycles at 12km per hour. How distances does he cover in 36 minutes?
Q6. An object moves 9 m in first 3 sec, 11 m in next 3 sec, and 7 in last 3 sec. What is its average
speed?
Q7. A body travels along a circular path of radius 70 me after travelling half a revolution in 20
seconds find the average speed and average velocity.
Q8. A Boeing 747 aircraft has a landing speed of 72 m/s, and upon landing it is able to come to a stop in
2,000 m. assuming constant deceleration, how long would it take for a Boeing 747 to come to a full stop?

Q9. An object moves along a straight line with an acceleration of 2 m/s 2 . If its initial speed is 10 m/s,
what will be its speed 2 s later?
Q10. A bullet hits a Sand box with a velocity of 20 m/s and penetrates it up to a distance of 6 cm. Find
the deceleration of the bullet in the sand box.
Q11.Two cars A and B race each other. The Car A ran for 2 minute at a speed of 7.5 km/h, slept for
56 minute and again ran for 2 minute at a speed of 7.5 km/h. find the average speed of the car A in
the race.

Q12. Anand leaves his house at 8.30 A.M for his school. The school is 2 km away and classes start
at 9.00 A.M. If he walks at a speed of 3 km/h for the first kilometer, at what speed should he walk the
second kilometer to reach just in time?

Answer 1

Answer:

didi, I think this is ur summer vacation homework right?

Explanation:

we can help but can u please send the questions 1 by 1 ?

Answer 2

Answer:

Explaining Q1

Explanation:

Ans : Speed = distance travelled / time  

Therefore,

distance travelled = speed x time

 

In 30 minutes or 0.5 Hr the car travelling with the speed of 30 Km/Hr will cover the distance (15KM)  

By solving : 30 x 0.5 = 15 Km distance

 

similarly, with the speed of 40 Km/Hr for 1 hour, the car will cover

= 40 x 1 = 40 Km

 

Therefore, just add the Values :  15 Km + 40 Km = 55 Km

HOPE THIS HELPS