Elective Mathematics quick practice

Question 1 of 10

Two masses 3 kg and 2 kg hang over a smooth pulley. The acceleration is (g = 10 m/s²)

Question 2 of 10

A contradiction is true in some cases.

Question 3 of 10

Find the centre of the circle x² + y² + 2x + 4y − 44 = 0.

Question 4 of 10

Marks are normally distributed with mean 66 and standard deviation 6. Find the mark that corresponds to z = 1.

Question 5 of 10

Marks are normally distributed with mean 53 and standard deviation 4. Find the mark that corresponds to z = 1.5.

Question 6 of 10

A body projected at 20 m/s at 30° to the horizontal reaches a maximum height of (g = 10 m/s²)

Question 7 of 10

A fair coin is tossed 4 times. P(exactly 2 heads) is

Question 8 of 10

Kinetic energy is always conserved in a collision.

Question 9 of 10

Work done against gravity increases potential energy.

Question 10 of 10

The tangent is perpendicular to the radius at the point of contact.