Question 1: What is the speed of:

A) a car that travels 400m in 20 seconds?

B) an athlete who runs 1500m in 4 minutes?

Question 2: A particle moving with uniform acceleration of 2m/s² has a velocity of 4m/s at a certain time. What is the final velocity?

A) 1 second later?

B) 5 seconds later? 

How to calculate and key points:
- First write the given values. 
- then formula 
And you know how? 
Don't use words just use thier stander for like V stand for speed and you know the rest. 


### Question 1:
#### A) 
Given:  
\( d = 400 \, \text{m} \)  
\( t = 20 \, \text{s} \)  
Formula:  
\( v = \frac{d}{t} \)  
Calculation:  
\( v = \frac{400}{20} = 20 \, \text{m/s} \)

#### B) 
Given:  
\( d = 1500 \, \text{m} \)  
\( t = 4 \times 60 = 240 \, \text{s} \)  
Formula:  
\( v = \frac{d}{t} \)  
Calculation:  
\( v = \frac{1500}{240} = 6.25 \, \text{m/s} \)

---

### Question 2:
Given:  
\( u = 4 \, \text{m/s} \)  
\( a = 2 \, \text{m/s}^2 \)  
Formula:  
\( v = u + at \)  

#### A) 
\( t = 1 \, \text{s} \)  
\( v = 4 + 2(1) = 6 \, \text{m/s} \)

#### B) 
\( t = 5 \, \text{s} \)  
\( v = 4 + 2(5) = 14 \, \text{m/s} \)

---

Would you like details or have any questions?

### Related Questions:
1. What is the distance covered by the car in 30 seconds at the same speed?
2. How much time will the athlete take to cover 3 kilometers at the same speed?
3. What is the initial velocity of a particle if its final velocity after 3 seconds is 16 m/s, and acceleration is 2 m/s²?
4. How far does the particle travel in 5 seconds if starting from rest with uniform acceleration of 2 m/s²?
5. What is the average speed of a car that accelerates from 0 to 20 m/s in 10 seconds?

### Tip:
To solve physics problems efficiently, always break them down into smaller steps by identifying the known values and selecting the right formula first.

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