## Bharat Gupta is teaching live on Unacademy Plus

TIME, SPEED AND DISTANCE Relative speed - 2

1 w ai

A thief steals a car at 1.30 pm and drives it off at 40 km/hr. The theft is discovered at 2 pm and the owner sets off in another car at 50 km/hr. He will overtake the thief at: a. 5 pm b. 4 pm c. 4.30 pmd. 6 pm

A thief steals a car at 1.30 pm and drives it off at 40 km/hr. The theft is discovered at 2 pm and the owner sets off in another car at 50 km/hr. He will overtake the thief at: a. 5 pm b. 4 pm c. 4.30 pm d. 6 pm Tiwe to ov

A boy started from his house by bicycle at 10 am at a speed of 12 km per hour. His elder brother started after 1 hr 15 mins by scooter along the same path and caught him at 1.30 pm. The speed of the scooter will be (in km/hr): a. 4.5 b. 36 2 d.9 c. 18 3

A boy started from his house by bicycle at 10 am at a speed of 12 km per hour. His elder brother started after 1 hr 15 mins by scooter along the same path and caught him at 1.30 pm. The speed of the scooter will be (in km/hr): a. 4.5 b. 36 2 d.9 c. 18 3 R. S. 21-12=- C1 2

A person is driving with the velocity of 56 km/hr. He saw a bus 120 m away. After 30 sec bus is 80m behind him. Find speed of bus in km/hr. a. 40 km/hr b. 28 km/hr c. 32 km/hr d. 30 km/hr s Deo

Arjun's house is at the top of a hill. He is moving up the hill towards his house at a constant speed of 90 kmph. His pet dog, Tommy, spots the car from the top of the hill when it is 1140 km away from the top. The dog starts moving down the hill comes to the car and again goes back to the top of the hill. This movement of dog continue till Arjun reaches his house. The speed of the dog is 120 km/h in both down hill and uphill movement. Find the total distance covered by the dog. a. 2760 km b. 1520 km c. 2660 km d. None of these

Arjun's house is at the top of a hill. He is moving up the hill towards his house at a constant speed of 90 kmph. His pet dog, Tommy, spots the car from the top of the hill when it is 1140 km away from the top. The dog starts moving down the hill comes to the car and again goes back to the top of the hill. This movement of dog continue till Arjun reaches his house. The speed of the dog is 120 km/h in both down hill and uphill movement. Find the total distance covered by the dog. a. 2760 km b. 1520 km c. 2660 km d. None of these To I uo uw 3

A man is travelling by 20km/hr and the second by 18 km/hr in the same direction together. The second man increases his speed by half km/hr in each hour. After how many hours, the second man meet the first man? a. 8 b. 10 C. 9 d. 12