NECESITO AYUDA PORFAVOr es PARA AHORA EVALUACIÓN DE INTRODUCCIÓN A LA FÍSICA 4G

1-¿Qué energía cinetica tendrá un cuerpo de 45kg de masa cuando lleva una velocidad de 76km/h?

2-Un adulto de 80kg camina a una rapidez de 4m/s
a)¿Cuaál es su energía cinetica?
b)Cual seria su rapidez si su energía cinetica se duplicara?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

Which of the following is not a physical property of mattera. melting pointb. heat of combustionc. viscosityd. boiling point