681. Using both hands to turn a steering wheel is easier than using just one hand because:
A. Accelerating force increases on the wheel
B. Two forces act on the wheel
C. Two hands provide a firm grip
D. Couple acts on the wheel
682. The cross product of two vectors is a negative vector when:
A. They are parallel vectors
B. They are anti-parallel vectors
C. They are perpendicular vectors
D. They are rotated through 270 degrees
683. If you drive west at 20 KM/H for one hour, then drive east 15KM/H for one hour, Your net displacement will be:
A. 5 KM East
B. 35 KM West
C. 35 KM East
D. 5 KM West
684. In the vastness of space, everything is in the following state:
A. Rest
B. Rectilinear Motion
C. Perpetual motion
D. Circular motion
685. If the slope of the velocity-time graph increases at a constant rate, with time, then the body is said to have:
A. Uniform retardation
B. Uniform negative acceleration
C. Average acceleration
D. Uniform positive acceleration
686. The magnitude of displacement is:
A. Distance between two points
B. Distance in a curved path
C. Shortest distance between two points
D. Perpendicular distance
687. Resultant of 120 N and 20 N forces cannot be?
A. 100 N
B. 101 N
C. 130 N
D. 141 N
688. Reverse process of vector addition is called?
A. Resolution of vectors
B. Subtraction of vectors
C. Negative of a vector
D. Multiplication of a vector
689. The magnitude of the resultant of two forces 6 N and 8 N acting at right angles is?
A. 10 N
B. 6 N
C. 14 N
D. 16 N
690. If the resultant of two vectors each of magnitude F is also of magnitude F. Then the angle between them?
A. 30 Degree
B. 120 Degree
C. 60 Degree
D. 90 Degree
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