Who created a steel plow

Is the direction of net force always in the direction of motion? Explain.

A mysterious energy that accelerates the expansion of the universe is

A charge - 1.3 * 10-5 C is fixed on the x-axis at 7 m, and a charge 1 * 10-5 C is fixed on the y-axis at 4 m. Calculate the magnitude of the resultant electric field E~ at the origin. Answer in units of N/C.

A car heading north collides at an intersection with a truck of the same mass as the car heading east.

There are four springs stretched by the same mass. Spring A stretches 25 cm. Spring B stretches 10 cm. Spring C stretches 100 cm. Spring D stretches 1 cm. Which spring is the weakest? A B C D

What is the magnitude of the gravitational force the apple exerts on earth?

What is the period of a 1.00 m long pendulum?

Kaylie is describing the physical properties of an orange and a lemon. which two physical properties can she determine without using any measurement instruments

What is an example of a third class lever and why use it? A) pulley; changes direction B) baseball bat; increases velocity Eliminate C) car jack; increases the weight it can lift D) wheel barrow; makes it easier to move a load

1. The horizontal and vertical components of a projectile's velocity are a. directly proportional C. independent of each other b. inversely proportional d. equal