Physics 101 | UJ

If two nonzero vectors point in the same direction, their vector product must be zero

A vector A has a magnitude of 7 units and is in the direction of positive x-axis, a vector B has a magnitude of 4 units and making an angle of 30° with the positive x-axis. The magnitude of A cross B is:

The components of vector A are given as Ax=-3 m and Ay = 4 m. Their magnitude is:

The components of vector A are Ax= + 3.90 and Ay = -4.00. What is the angle measured counterclockwise from the +x-axis to vector A?

The position x, in meters, of an object is given by the equation x = A t² +B t, where t represents time in seconds. The SI units of A and B are:

For the vectors shown in the figure, find the magnitude and direction of B XA, assuming that the quantities shown are accurate to two significant figures

If A = +3 î-2 j-4k and C=-3 i -2 j-3 k, which of the following numbers is closest to the magnitude of A - C?

Which of the following quantities is not a vector quantity ?

If two nonzero vectors point in the same direction , their dot product must be zero

You walk 87 m to the north, then turn 45° to your right and walk another 36 m , How far you are from where you originally started.

If B=5i-2j+k and C=-4i+j-3k , then (C×B) is

The SI units of the derived quantities (Area , volume , density) are

A cubic box with an edge of 6,4 mm has a volume of

Determine the angle between the direction of vector A=7i-4j , and vector B=7i+6j

A military car moves with constant speed of 60 km/h it’s speed after 20 min is

The angle that vector A=3i-8j+2k makes with negative Y-axis is

Given A= 7i-5j+k then the magnitude of vector A is