MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Radhika Batra Grade: 11
         A healthy young man standing at a distance of 7 m from a 11.8 m high building sees a kid slipping from the top floor. With what speed (assumed uniform) should he run to catch the kid at the arms height (1.8 m)?  
3 years ago

Answers : (1)

Kevin Nash
askIITians Faculty
332 Points
										Sol. At point B (i.e. over 1.8 m from ground) the kid should be catched. For kid initial velocity u = 0

Acceleration = 9.8 m/s2
Distance S = 11.8 – 1.8 = 10 m
S = ut + ½ at2 ⇒ 10 = 0 + ½ (9.8) t2
⇒ t2 = 2.04 ⇒ t = 1.42.
In this time the man has to reach at the bottom of the building.
Velocity s/t = 7/1.42 = 4.9 m/s.
3 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: Rs. 2,756
  • View Details
Get extra Rs. 413 off
USE CODE: COUPON10
  • Complete Physics Course - Class 11
  • OFFERED PRICE: Rs. 2,968
  • View Details
Get extra Rs. 445 off
USE CODE: COUPON10

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details