Kinematics

A changing slope on a velocity-time graph indicates that the object's acceleration is changing. If the slope is increasing, the acceleration is positive, and if the slope is decreasing, the acceleration is negative. A flat slope indicates constant velocity.

In the UK, speed limits are typically measured in miles per hour (mph). However, some signs may also display speed limits in kilometers per hour (kph) to cater to international drivers.

9 kilometers per hour is equivalent to approximately 5.59 miles per hour.

To convert knots to inches per second, use the conversion factor of 1 knot = 1.68781 inches per second. Multiply the speed in knots by this conversion factor to get the equivalent speed in inches per second.

Friction reduce the velocity, hence, it affect kinetic energy. The potential energy from static pressure is then drawn to maintain the velocity (transformation of potential -> kinetic energy). We then see the friction reduce the static pressure but actually, it affect kinetic first.

The average velocity of a unicycle going around semicircles would be zero if it starts and ends at the same point, since the displacement is zero. If it starts and ends at different points, the average velocity would depend on the total distance traveled and the time taken to complete the semicircles.

On a distance time graph, velocity is measured as the gradient of the line. This is also the rate of change of the distance (if this question leads to calculus).

So a velocity of zero is shown by a horizontal line (if linear) or by a turning point (in a non-linear graph)

The typical BREAKING distance from 50mph is 38meters, but the overall stopping distance is 53meters (overall stopping distance is made up of thinking distance, which is 15meters in this case, + breaking distance)

When traveling under 45 mph, you must signal at least 100 feet before making a turn. This signal allows other drivers and pedestrians to anticipate your actions and helps maintain safety on the road.

The potential energy of the vase can be calculated using the formula: Potential Energy = mass * acceleration due to gravity * height. Plugging in the values: Potential Energy = 3 kg * 9.8 m/s^2 * 2.5 m = 73.5 Joules.

45 mph = 120,960 furlongs per fortnight.

The answer was potential energy, which surely is wrong. The energy generated is, self evidently, mechanical energy. This can then be used directly or indirectly to generate other forms of energy, typically water flow is converted directly into mechanical then pure electrical energy in a generator turbine, as at a Hydroelectric power station. Brian Catt CPhys.

229 kilometers per hour is approximately equal to 142.29 miles per hour.

Ans;- 4.6 meters per second. This assumes they are heading 'Directly' towards each other, and the 'Impact speed' will be the sum of their individual speeds !. But If they are approaching each other on a collision path, but at an angle, then one of the speeds will be vectored, by trigonometry to reduce its approach speed, according to the angle.

The potential energy of the car at the top of a 25-meter hill is given by PE = mgh, where m is the mass of the car, g is the acceleration due to gravity, and h is the height of the hill. Assuming no friction or other energy losses, the potential energy at the top of the hill is equal to the kinetic energy at the bottom.

To calculate the speed, you would divide the distance traveled by the time it took to travel that distance. In this case, traveling 5000 feet in 30 seconds means you are traveling at a speed of 166.67 feet per second.

By allowing an increase in stopping distance, the kinetic energy of the vehicle can be reduced. This reduction in kinetic energy results in a slower deceleration of the vehicle, which means a lower force is applied to bring it to a stop. As a result, the momentum of the vehicle is offset, as it takes longer to come to a complete stop.

I rather believe the question ask the kinetic energy equals to rest mass energy of electron. If it would state the figure of rest mass of 9.111 x 10-31 kg = kinetic energy of 9.111 x 10-31 J the unit should be given more clearly.

It is given rest mass of 9.111 x 10-31 kg and rest mass energy is calculated by E = mC2

The kinetic energy is

Ek = mC2/(1-v2/C2)0.5 - mC2 and for Ek = mC2

It is solving for mC2 = mC2/(1-v2/C2)0.5 - mC2 --> 2mC2 = mC2/(1-v2/C2)0.5

2 = 1/(1-v2/C2)0.5

Solve for v should not be too hard for you.

Now, the momentum

You must notice that when v is close to speed of light (C), you can't simply use

momentum = mv but rather P = mv/(1-v2/c2)0.5

Use v obtained from above to solve for momentum.

The Kawasaki KZ900 had a top speed of around 125 mph (201 km/h) in stock form. However, modifications or tuning could potentially increase its speed.

Average speed of a vehicle is a scalar quantity because it only has magnitude and not direction. It is calculated by dividing the total distance traveled by the total time taken, without considering the direction of motion.

Yes, it is possible for a body's velocity and acceleration to be in opposite directions. This would result in the body's velocity decreasing over time while its acceleration remains negative. On a velocity-time graph, this situation would be represented by a curve that starts with a positive velocity and decreases over time.

When an object falls and touches the ground, its kinetic energy is converted into potential energy and other forms of energy, such as sound and heat. The potential energy is stored in the object as it is lifted back up, ready to be converted back to kinetic energy as it falls again.

The formula for kinetic energy is:

KE =( mv2)/2

m= mass (not weight)

v= velocity

A more massive car will have more kinetic energy than a lighter one traveling at the same speed. A faster moving car will have much more kinetic energy than an identical car moving slower.

Ken ran a total of 31.5 miles (4.5 hours * 7 miles per hour = 31.5 miles).

When adding vectors using the head-to-tail method, you place the head of the second vector at the tail of the first vector. The resultant vector is drawn from the tail of the first vector to the head of the second vector. This technique preserves both magnitude and direction of the vectors being added.