2) The scalar product of vector A 3002.2.001 and vector h is 100. Which vector b

Question

2) The scalar product of vector A 3002.2.001 and vector h is 100. Which vector below could be vector B A) 200 ,, f 2.00 B) 5.001 +4.00 C) 4.001 +6.00 D) 2.001+4.00 3) Vector-1.00 n (-200),and vector B-3 00+4.00 What are the magnitude and direction of vector - A+B7(Use the space below to calculate) A) 447 in a direction 26.6° counterclockwise from the positive r axis B) 7 21 in a direction 33.7e counterclockwise from the positive r axis C) 447 in a direction 6.34 counterclockwise from the positive x axis D) 7.21 in a direction 56.3 counterclockwise from the positive x axis 4) If the acceleration of an object is negative, the object must be slowing down. A) True B) False 5) A ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball is coming down. A) Its velocity points downward and its acceleration points upward. B) Both its velocity and its acceleration point upward. C) Both its velocity and its acceleration point downward. D) Its velocity points upward and its acceleration points downward. FOUR MORE QUESTIONS IN THE NEXT PAGE!!! 2/9/2018

Explanation / Answer

2-: A

scalar product =10

So: 3*x+2*y=10

This fits for option A only(2,2) so A is correct

3:A

A+B=4i-2j

Magnitude=(4*4+(-2)*(-2))0.5=4.47

Angle=tan-1(2/4)=26.6 counter clockwise

4:B

It may be increasing its speed in negative direction

5:C

Velocity and acceration both are downward as gravity force(downward) is acting on it due to which its velocity from top point where v=0 starts increasing in downward direction

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