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Hace 3 días · The SI unit of energy is $J= kg m^2 s^{-2}$; that of speed v is $ms^{-1}$ and of acceleration is $ms^{-2}$. Which of the formula for kinetic energy (K) given below can you rule out on the basis of dimensional arguments (m stands for mass of the body):
Hace 1 día · Acceleration is the rate of change of velocity (meters per second squared, m/s²). Time is the duration for which the object accelerates (seconds). Example Calculation. For an object starting from rest (initial velocity = 0 m/s), accelerating at 2 m/s² for a duration of 5 seconds, the distance traveled is: \[ \text{Distance} = 0 ...
Hace 3 días · A motorcycle has a constant acceleration of magnitude 2.5 m/s2. The velocity and acceleration of the motorcycle point in the opposite direction. How much time is required for the motorcycle to change its speed from 51 m/s to 41 m/s? A) 10 s B) 0.25 s C) 22 s D) 7.5 s E) 4.0 s
Hace 6 días · The formula to calculate acceleration from RPM is given by: \[ A = \frac{{\text{RPM} \times \pi \times 2}}{{60}} \times r \] where: \(A\) is the acceleration in meters per second squared (\(m/s^2\)), \(\text{RPM}\) is the total rotations per minute, \(r\) is the radius in meters (\(m\)). Example Calculation
Hace 4 días · Moments of inertia may be expressed in units of kilogram metre squared (kg·m 2) in SI units and pound-foot-second squared (lbf·ft·s 2) in imperial or US units. The moment of inertia plays the role in rotational kinetics that mass (inertia) plays in linear kinetics—both characterize the resistance of a body to changes in its motion.
Hace 2 días · The Hubble constant is most frequently quoted in ( km / s )/ Mpc, thus giving the speed in km/s of a galaxy 1 megaparsec (3.09 × 10 19 km) away, and its value is about 70 (km/s)/Mpc. However, crossing out units reveals that H0 is a unit of frequency (SI unit: s −1) and the reciprocal of H0 is known as the Hubble time.
Hace 18 horas · Natural behaviors occur in closed action-perception loops and are supported by dynamic and flexible beliefs abstracted away from our immediate sensory milieu. How this real-world flexibility is ...
