IGCSE, Edexcel, IB and AP Science Courses | Dr Dabour Hub Academy

1.

A body of mass 70 kg is placed on a spring scale fixed to the floor of an elevator. What is the scale reading in kg·wt if the elevator accelerates downwards at 1.4 m/s²?

80 kg·wt

70 kg·wt

60 kg·wt

50 kg·wt

2.

If $y = \sec(3x)$, then the derivative $\frac{dy}{dx}$ is equal to:

A) $3sec(3x) tan(3x)$

C) $-3csc(3x) cot(3x)$

D) $3sec^2(3x)$

B) $sec(3x) tan(3x)$

3.

The sum to infinity (S_infinity) of a geometric series exists and converges if and only if the common ratio satisfies:

|r| < 1 (i.e. -1 < r < 1), and S_infinity = a / (1 - r)

r = 1

|r| >= 2

r > 1

4.

If y = (2x + 1) * (3x - 4), then dy/dx evaluated at x = 1 equals:

12

7

1

-5

5.

If y = sin(3x) + cos(2x), then dy/dx at x = 0 equals:

5

1

-2

3

6.

STEM Limits Problem 10: Evaluate the limit: lim [x -> 0] (sin(5x) / tan(2x)).

0

Undefined

5/2 (or 2.5)

1

7.

STEM Limits Problem 11: Evaluate the limit: lim [x -> 0] (sin(5x) / tan(2x)).

1

5/2 (or 2.5)

Undefined

0

8.

STEM Limits Problem 20: Evaluate the limit: lim [x -> 0] (sin(5x) / tan(2x)).

1

Undefined

0

5/2 (or 2.5)

9.

STEM Limits Problem 21: Evaluate the limit: lim [x -> 0] (sin(5x) / tan(2x)).

5/2 (or 2.5)

1

0

Undefined

10.

STEM Limits Problem 30: Evaluate the limit: lim [x -> 0] (sin(5x) / tan(2x)).

1

Undefined

0

5/2 (or 2.5)

11.

STEM Limits Problem 31: Evaluate the limit: lim [x -> 0] (sin(5x) / tan(2x)).

5/2 (or 2.5)

1

0

Undefined

12.

STEM Limits Problem 40: Evaluate the limit: lim [x -> 0] (sin(5x) / tan(2x)).

5/2 (or 2.5)

1

0

Undefined

13.

STEM Limits Problem 41: Evaluate the limit: lim [x -> 0] (sin(5x) / tan(2x)).

1

0

Undefined

5/2 (or 2.5)

Curriculum

Mathematics

Unit 1

Unit 2

Unit 3

Unit 4

Unit 5

Unit 6

Unit 7

Lesson 1 Quiz: Momentum, Newtons Three Laws of Motion, Impulse and Energy

Quiz finished, well done