You want to do it all by yourself ? Nothing to it !
Take a piece of rope that's maybe 12 to 18 inches long. Take one end
of the rope in each hand, raise your hands up in front of you, and make
like you're trying to stretch the rope. You'll automatically make the forces
of your hands equal and opposite, so that the rope just stays there in front
of you and doesn't move.
Answer:
The acceleration of the car, a = 60 m/s²
Explanation:
Given data,
The initial velocity of the car, u = 0 m/s
The final velocity of the car, v = 30 m/s
The displacement of the car, s = 0.25 km
Using the III equations of motion
v² = u² + 2as
a = (v² - u²) / 2s
= 30 / 2 x 0.25
= 60 m/s²
Hence, the acceleration of the car, a = 60 m/s²
Explanation:
At each position, the object's velocity is represented by a vector. If the car were traveling at greater velocity, the strobe photo might look like this: The corresponding motion map has the points spaced farther apart, and the velocity vectors are longer, implying that the car is moving faster.
Using the mirror formula.
1/v + 1/u = 1/f
1/9.5 + 1/3.2 = 1/f
1/f = 3.2 + 9.5 / 9.5 * 3.2
1/f = 4.82 cm
Radius = 2f
Radius = 2 x 4.82
Radius = 9.64 cm
