Pls
you have placed a cube of ice in a cup of water based on the graph answer the questions that follow
1. when has the ice melted?
2. what temperature does the phase change occur?
3. at 25° c what is the state or states of the water in the beaker?
4. at nine minutes what is the state or states of the water in the beaker?
5. what did you observe about the temperature of the water inside the beaker when ice is still present?
6. explain why sublimation and deposition are classified as a physical change

c. magnitude and direction

pecialized keyboards

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.