1011 Time of launching a ship | Rectilinear Translation Jhun Vert Mon, 04/20/2020 - 10:32 am

Problem 1011
A ship being launched slides down the ways with constant acceleration. She takes 8 sec to slide (the first foot | 0.3048 meter). How long will she take to slide down the ways if their length is (625 ft | 190.5 m)?

1009 Initial velocity of the second ball | Rectilinear Translation Jhun Vert Mon, 04/20/2020 - 10:29 am

Problem 1009
A ball is shot vertically into the air at a velocity of 193.2 ft per sec (58.9 m per sec). After 4 sec, another ball is shot vertically into the air. What initial velocity must the second ball have in order to meet the first ball 386.4 ft (117.8 m) from the ground?

11 - Messenger From Rear To Front Then Back To Rear Of A Marching Battalion Jhun Vert Fri, 04/17/2020 - 07:14 pm

A battalion, 20 miles long, advances 20 miles. During this time, a messenger on a horse travels from the rear of the battalion to the front and immediately turns around, ending up precisely at the rear of the battalion upon the completion of the 20-mile journey. How far has the messenger traveled?

10 - Messenger From Front To Rear Then To Front Of A Marching Army Column Jhun Vert Fri, 04/17/2020 - 07:05 pm

An army of troops is marching along a road at 5 kph. A messenger on horseback was sent from the front to the rear of the column and returns immediately back. The total time taken being 10 minutes. Assuming the messenger rides at the rate of 10 kph, determine the length of the column.

09 - Number of Leaps to Take to Catch the Lead Jhun Vert Fri, 04/17/2020 - 07:03 pm

A cat takes 4 leaps to a dog's 3; but 2 of the dog's leaps are equivalent to 3 of the cat’s. The cat has a start of 50 leaps. How many leaps must the dog take to catch the cat?

08 - Sound of Impact be Heard Before the Report of the Gun Jhun Vert Fri, 04/17/2020 - 07:01 pm

A bullet is fired at a target 1,342 m away. At what point along its path would the sound of the impact of the bullet be heard 1/4 second before the report of the gun, assuming that sound travels at the rate of 335 m/sec and the bullet is 503 m/sec.

07 - A Man Covers an Unknown Distance at Different Rates Jhun Vert Fri, 04/17/2020 - 06:58 pm

A man covers the distance A to B in 5 hours and 30 minutes. During the second half of the distance he traveled 1/2 kilometer less per hour than during the first half. In the return trip from B to A, by traveling 1 km/hr faster than during the first half of his trip from A to B, he consumed 3-3/4 hours. Determine the distance AB.

06 - The Battleship Was Brought to Full Stop After 1 Hour of Voyage Jhun Vert Fri, 04/17/2020 - 06:56 pm

A battleship started on a 500-mile voyage but was brought to full stop an hour after starting for military reasons, delaying it for full hour, after which it was ordered to proceed at a reduced velocity equivalent to 75% of its former rate. The ship arrived at its destination 3 hours and 3 quarters after scheduled time. If it was desired for the ship to arrive one hour and a quarter sooner, how far from the destination should the ship have been ordered stopped?

05 - Two runners moving in opposite directions in a circular track Jhun Vert Fri, 04/17/2020 - 06:55 pm

Benjie and Jerwin is running in opposite directions in a 400-meter circular track and meet each other every 35 seconds. If Benjie can complete one track in 65 seconds. How long does it take for Jerwin to run 400 meters?