1. The pilot flew for 2 hours at 150 km/h north, deviating 30 degrees west. After 1 more hour, the distance from origin was 200 km. Calculate the wind speed. 2. A plane flew from Penang to Singapore (300 km apart) at 700 km/h. A wind was blowing S30E at 150 km/h. Determine the direction the pilot must fly to overcome the wind, and calculate the arrival time. 3. Determine the time needed for a researcher to cross a 5m river boating with flow speeds of 1 m/s at noon and 2 m/s at night.

1. 1
PHYSICS--MECHANICS
Supplementary Questions For Chapter 1
1. A pilot is flying from south to north by a speed of 150kmh-1 for two hours.
Meanwhile, his plane is blowing by a gale and causes the pilot deviates from the
original route. The pilot deviates 30 degrees west from the original route. After the
pilot flying his plane one hour, the distance between the final destination and the
departure point which is 200km. Hence Calculate the speed of the wind.
2. A pilot is flying from Penang International Airport to
Singapore International Airport by 8.00 a.m. in the
morning. The shortest distance between the two
airports are 300 km. The flying speed of the plane which
is 700kmh-1. Wind is blowing from S 30° E with the
speed of 150kmh-1. Determine the pilot need to fly to
which direction to overcome the forces of wind. Hence,
calculate the time the plane arrive at Singapore
International Airport.
3. A researcher want to across a 5 metre river by boating. He use 20 seconds to
reach the other side of the river. The flow speed of the river increase to 1ms-1 at
the noon then increase to 2ms-1 at the night. Determine that the time needed of the
researcher to reach the other side of the river when he boating at the noon and at
the night.
4. Find the resultant of 15 m, 210 degrees + 25
m, 300 degrees + 20 m, 45 degrees.
Prepared By: Kuen Jian Lin
Checked By : Mr Pak Ban Huat
Sources From : Mr Pak Ban Huat
Date: 21/7/2018

2. 2
PHYSICS--MECHANICS
Supplementary Questions For Chapter 2
1. A police car is parking at the side of a highway. Meanwhile, a driver is driving
over speed limit by the velocity of 100kmh-1 after the police car. So the police car
starts to chase the driver at initial speed of 0ms-1 and the acceleration of 20ms-1.
Find the time taken and the displacement that the police used to chase after the
driver. If the police car can only drive at a velocity limit of 140ms-1, find the time
taken and the displacement that the police used to chase after the driver.