If a force acts perpedicular to the direction of motion of a body, what is the amount of work done?
Anonymous Quiz
4%
Infinity
19%
Constant
69%
Zero
8%
one
What is the sign of the work done by gravity on a man standing on a platform?
Anonymous Quiz
23%
Positive
31%
Zero
31%
Negative
15%
Depend on a particular situation
What is the sign of the work performed on an object in uniform circular motion?
Anonymous Quiz
50%
Zero
34%
Positive
6%
Negative
10%
Depend on the particular situation
❤4
A constant force of 10 N causes a box to move at a constant speed of 2 m/s. How much work is done in 10 seconds?
Anonymous Quiz
46%
200J
29%
100J
20%
20J
6%
25J
A horizontal force of 5 N is required to maintain a velocity of 2 m/s for a block of 10 kg
mass sliding over a rough surface. Calculate the work done by this force in one minute.
mass sliding over a rough surface. Calculate the work done by this force in one minute.
Anonymous Quiz
19%
20J
41%
10J
26%
5J
15%
25J
A force F = (5i – 3j +2k) N moves a particle from r1 = (2i + 7j + 4k) m to r2 = (5i + 2j + 8k) m. What is the work done by the force?
Anonymous Quiz
20%
18 J
15%
28 J
55%
38 J
10%
48 J
The area under the force (F) versus displacement (x) graph gives work.
Anonymous Quiz
69%
True
31%
False
A force F = x + 1 N acts on a particle in x direction. What is the work done from x = 2m to 5 m?
Anonymous Quiz
25%
9.5J
43%
8.3J
25%
12.6J
7%
13.5J
In situations involving non conservative external force, the work done by these forces:
Anonymous Quiz
42%
Can be either positive or negative
22%
Is always equal to zero
29%
Is always positive
7%
Is always negative
If Birr 5000 is invested at a rate of 6% compounded quarterly ( 4 times a year), then how long does it take to double the investment?
Anonymous Quiz
17%
4.5 years
46%
11. 58 years
29%
17. 42 years
8%
6. 62 years
✨ Learn these 3 useful phrasal verbs with CUT!
🔹 CUT OFF — To disconnect or stop a supply. 🚰
Example: She cut off the water supply.
🔹 CUT DOWN (ON) — To reduce the amount of something. 🍬
Example: He cut down on sugar.
🔹 CUT OUT — To remove something by cutting. ✂️
Example: She cut out a heart shape. ❤️
@maths_group11
🔹 CUT OFF — To disconnect or stop a supply. 🚰
Example: She cut off the water supply.
🔹 CUT DOWN (ON) — To reduce the amount of something. 🍬
Example: He cut down on sugar.
🔹 CUT OUT — To remove something by cutting. ✂️
Example: She cut out a heart shape. ❤️
@maths_group11
❤3
Learn these 3 useful phrasal verbs with “BREAK” and use them confidently in everyday conversations! 🗣️📖
🔹 1. BREAK UP — To divide something into smaller parts.
✅ Example: Let’s break up the chocolate bar and share it. 🍫
🔹 2. BREAK OFF — To detach or separate a piece from something.
✅ Example: She broke off a piece of the cake. 🎂
🔹 3. BREAK APART — To separate into pieces or cause something to fall apart.
✅ Example: The vase fell and broke apart into pieces. 🏺
💡 Quick Tip:
🔸 Up = Divide
🔸 Off = Detach a piece
🔸 Apart = Separate into pieces
@maths_group11
🔹 1. BREAK UP — To divide something into smaller parts.
✅ Example: Let’s break up the chocolate bar and share it. 🍫
🔹 2. BREAK OFF — To detach or separate a piece from something.
✅ Example: She broke off a piece of the cake. 🎂
🔹 3. BREAK APART — To separate into pieces or cause something to fall apart.
✅ Example: The vase fell and broke apart into pieces. 🏺
💡 Quick Tip:
🔸 Up = Divide
🔸 Off = Detach a piece
🔸 Apart = Separate into pieces
@maths_group11
❤5
The solution set of the quadratic equation x² + 6x +8 = 0 is__________.
Anonymous Quiz
17%
{2, 4}
70%
{-4, -2}
4%
{-4, 2}
9%
{-2, 4}
What is the solution set of the system of linear equations x+ y = 7 and 2x +3y = -3 ?
Anonymous Quiz
47%
{(24, -17)}
32%
{(-17, 24)}
18%
{(-24, 17)}
3%
{(17, -24)}
❤2