4.force equals mass times acceleration.力等于质量乘以加速度。 5.These include speed, endurance, strength, stamina, agility and flexibility.这些素质包括:速度,耐力,力量,持久力,灵活性和柔韧性. 6.Relativity Study on the Top Speed and the Speed-Strength Training in Sprint;短跑运动中速度—力量练习与...
4.force equals mass times acceleration.力等于质量乘以加速度。 5.a petrol, pressure, rain, speed, etc gauge汽油量表、 压力计、 雨量计、 速度计. 6.stamina, strength, and flexibility.比如:速度、体力、力量、反应敏捷。 7.Determination of Vector Acceleration for Airborne Vector Gravimetry航空矢量重力...
in their grueling travels across trackless lands in prehistoric times, looked enviously on the birds soaring freely through space, at full speed, above all obstacles, on the infinite highway of the air. —
If the frequency of the exciting force is equal to the natural frequency of the object, and no damping is present, the object can vibrate to destruction. Therefore if the frequency of an exciting force equals the natural frequency of an object, the exciting force is operating at the “...
In translational motion, the driving force F is counterbalanced by a resisting force Fr set up by the driven machine and by an inertia force Ma arising from the change in speed, or (2)F−Fr=Ma=Mdυ/dt, where the mass M is expressed in kg. the velocity v in m/sec, the accelerati...
Research shows two apparently different equations. One formula, from Newton's second law, relates force, mass and acceleration in the equation force (F) equals mass (m) times acceleration (a), written as F = ma. Another formula, acceleration (a) equals change in velocity (Δv) divided by...
Wave period and wavelength are coupled by a simple relationship: wavelength equals wave period times wave speed, orL=TC, whenLis wavelength,Tis wave period, andCis wave speed. The wave speed of surfacegravity wavesdepends on the depth of water and on the wavelength, or period; the speed incr...
A distant planet orbits a star 3 times the mass of our Sun. This planet of mass 8 × 1026 kg feels a gravitational force of 2 × 1026 N. What is this planet's orbital speed and how long does it take to orbit once? A 1× 105m/s; 2.5 × 106s B 1.29 × 105m/s; 2...
英语翻译Newton's second law of motion describes force.It says:force equals the mass of an object,multiplied by the change in speed it produces in an object.
Articulating inertial torque is basically defined by the walking beam's acceleration, which at the given time equals d2θb/dt2 = −0.076 1/s2. The mass moment of inertia of the beam, horsehead, equalizer, bearings, and pitmans, referred to the saddle bearing, found from manufacturer data...