Page 2 - SP015 Past Years PSPM Chapter 1 -5 Ver.2020

PHYSICS PSPM SEM 1 1999 - 2017

UPS 2006/2007 SF015 No. 1(b)

4.

A

30

B

FIGURE 1.1

   
Given two vectors A and B as shown in FIGURE 1.1. If the magnitude of A and B
 
is 20 N and 10 N respectively, write the resultant vector of A and B in terms of unit
vector. [4 m]

UPS 2007/2008 SF015 No. 1(b)

5.


A
60


O B

  FIGURE 1.2
Vector A and B are placed at point O as shown in FIGURE 1.2. The magnitude of
both vectors are A = 4.2 N and B = 2.0 m.
(a) Calculate the dot (scalar) product of the two vectors. [3 m]
(b) At what angle between the two vectors will the dot product be a maximum?
[1 m]

UPS 2010/2011 SF015 No. 1(b)

6. Given two vectors: 
ˆ
P  2 ( i  5 ˆ ) j m

ˆ
Q  (i  3 ˆ ) j m
 
Calculate the magnitude of resultant vector of P and Q . [4 m]

UPS 2009/2010 SF015 No. 1(a)

-1
7. The speed of a car is 5 km h . Convert this speed to SI units. [3 m]

2