It's definitely not one of the graphs you gave us to choose from.

**Answer:**

The average velocity is 50 km/h south

**Explanation:**

The average velocity of an object is its total displacement divided by

the total time taken.

That means it is the rate at which an object changes its position from

one place to another.

Average velocity is a vector quantity.

The SI unit is meters per second.

A bicycle that starts 100 km south and is 120 km south of town after

0.4 hour.

The displacement = 120 - 100 = 20 km south

The time = 0.4 hour

The average velocity = , where D is the displacement

and t is the time

The average velocity of the bicycle = km/h

<em>**The average velocity is 50 km/h south**</em>

If you want it in meter per second, change the kilometer to meter

and change the hour to seconds

1 km = 1000 m

1 hour = 60 × 60 = 3600 seconds

The average velocity of the bicycle = m/s south

**Answer:**

(a). The deflection angle is

(b). The deflection angle is

(c). The deflection angle is

**Explanation:**

**Given that,**

Mass of earth

Radius of earth

Mass of white dwarf

Radius of white dwarf

Mass of Neutron

Radius of neutron

**We need to calculate the deflection angle for earth**

**Using formula of angle**

Where, R = radius

G = gravitational constant

M = mass

c = speed of light

Put the value into the formula

**The deflection angle is **

**We need to calculate the deflection angle for white dwarf**

**Using formula of angle**

Put the value into the formula

**The deflection angle is **

**We need to calculate the deflection angle for neutron star**

**Using formula of angle**

Put the value into the formula

**The deflection angle is **

**Hence, This is the required solution.**

C. The membrane is inside the cell wall. The cell wall surrounds the membrane.

**Answer:**

a = (v² − v₀²) / (2 (x − x₀))

**Explanation:**

v² = v₀² + 2a(x − x₀)

Subtract v₀² from both sides.

v² − v₀² = 2a(x − x₀)

Divide both sides by 2 (x − x₀).

(v² − v₀²) / (2 (x − x₀)) = a