Physics 1 Vectors

It's an example of vector quantity

• Distance

• Displacement

• Energy

• Mass

Which one of these options is NOT a vector quantity

• Force

• Displacement

• Momentum

• Energy

Vector F in the x-component is ....

• F sin 30^o

• F cos 30^o

• F sin 60^o

• F tan 60^o

Tags

NGSS.HS-PS2-1

Vector F in the y-component is ....

• F sin 30^o

• F cos 30^o

• F cos 60^o

• F tan 30^o

Tags

NGSS.HS-PS2-1

Given the vector  $A\ =\ 3i\ -4j+4k$  and  $B\ =\ 2i\ +3j-7k$ . Calculate the magnitude of  $\left|C\right|=A+B$  

• 5

• 6

•  $\sqrt{35}$  

•  $\sqrt{27}$  

Given the vectors  $A=\ 3i-4j+4k$  and  $B=2i+3j-7k$  . Calculate the magnitude of  $A\cdot B$  

• 34

• -34

• 46

• -46

A ball that has a mass of 1 kg moves the speed of  $v\ =\ 3i\ -4j$  . Calculate the magnitude of momentum of the moved ball

• -5 kg.m/s

• 5 kg.m/s

• 1 kg.m/s

• -1 kg.m/s

Tags

NGSS.HS-PS2-2

A block is pulled out with the force of 10 N forming an angle of 37^o to the horizontal as shown in the Figure. As the results, the block moves 2 m along the horizontal floor. Calculate the work done by the block.

Hint: cos 37^o= 0.8, sin 37^o= 0.6

• 28 Joule

• 20 Joule

• 16 Joule

• 12Joule

Tags

NGSS.MS-PS2-2

Given the vectors  $A=i-2j+3k$  and  $B=2i-3k$  . Calculate the magnitude of  $\left|C\right|=\left|A\times B\right|$  

•  $\sqrt{61}$  

•  $\sqrt{133}$  

•  $\sqrt{63}$  

•  $\sqrt{135}$  

Tom runs in the circle trajectory with the diameter of 2 2 m from point A and comeback to point A. How large is the displacement that Tom reaches

• $\pi\ m^2$

• $0\ m^2$

• $\frac{1}{4}\pi\ \ m^2$

• $\frac{1}{2}\pi\ \ m^2$