Wipro Company Numerical Ability Arithmetic

When an object is dropped, the number of feet N that it falls is given by the formula N = ½gt2 where t is the time in seconds from the time it was dropped and g is 32.2. If it takes 5 seconds for the object to reach the ground, how many feet does it fall during the last 2 seconds?

(1) 64.4
(2) 96.6
(3) 161.0
(4) 257.6

Read Solution (Total 1)

Distance travelled in 5 mins = (1/2)*g*25
Distance travelled in 3 mins = (1/2)*g*9
Distance travelled in last 2 mins = (1/2)*g*25 - (1/2)*g*9= (1/2)*g*16= 8*g = 8*32.2 = 257.6 ft ---- option 4
12 years agoHelpfull: Yes(1) No(1)

Wipro Other Question

A man driving his bike at 24 kmph reaches his office 5 minutes late. Had he driven 25% faster on an average he would have reached 4 minutes earlier than the scheduled time. How far is his office?

(1) 24 km
(2) 72 km
(3) 18 km
(4) Data Insufficient Rajesh traveled from city A to city B covering as much distance in the second part as he did in the first part of this journey. His speed during the second part was twice as that of the speed during the first part of the journey. What is his average speed of journey during the entire travel?

(1) His average speed is the harmonic mean of the individual speeds for the two parts.
(2) His average speed is the arithmetic mean of the individual speeds for the two parts.
(3) His average speed is the geometric mean of the individual speeds for the two parts.
(4) Cannot be determined.