SUMMATIVE TEST SET B

A rod measures 4.5 m. A student converts it to centimeters and writes 450 cm.

• TRUE

• FALSE

Accuracy refers to how close repeated measurements are to each other.

• TRUE

• FALSE

Displacement is a scalar quantity because it only has magnitude.

• TRUE

• FALSE

If two vectors of 5 m north and 8 m north are added, then the result is 13 m.

• TRUE

• FALSE

For a right triangle with sides 9 m and 12 m, the hypotenuse is 15 m.

• TRUE

• FALSE

Cosine law is only used when the triangle is a right triangle.

• TRUE

• FALSE

Two perpendicular vectors, 6 m east and 8 m north, have a resultant of 10 m.

• TRUE

• FALSE

To solve for the direction of the resultant vector using components, the sine function is always used.

• TRUE

• FALSE

The dot product of two perpendicular vectors is zero.

• TRUE

• FALSE

The magnitude of the cross product depends on the sine of the angle between the two vectors.

• TRUE

• FALSE