A ball of 23 g hangs from the roof of a freight car by a string. When the freight car begins to move, the string makes an angle of 35 degrees with the vertical (see figure). If the force of weight due to gravity points down the page and if we use 9.80 m/s2 for the local acceleration due to gravity. (a) What is the acceleration of the freight car (in m/s2). What is the tension in the string (in N)?

The weight of an astronaut plus his space suit on the Moon is only 290 N. How much do they weigh on Earth? Take the acceleration due to gravity on the Moon to be gM = 1.6 m/s2 and the acceleration on Earth to be g = 9.8 m/s2. Round your answer to two significant figures and include your unit.

A student has a mass of 25 kg.  If he stands on a scale in an elevator that is accelerating downward at 2.0 m/s/s, what will be his apparent weight?

A flea jumps by exerting a force of 1.02 x 10-5 N straight down on the ground. A breeze blowing on the flea parallel to the ground exerts a force of 1.16 × 10-6 N on the flea. Find the direction and magnitude (in m/s²) of the acceleration of the flea if its mass is 6.0 × 107 kg. (Let us assume that F points to the right. We will consider this to be the +x direction and vertical to be the +y wind direction.) magnitude 17.1 Did you draw a free-body diagram, and identify the forces acting on the flea? Consider the forces acting on the flea during the time it is in contact with the ground. m/s² direction 6.49 Review vector components. In which of the four quadrants is the resultant force located?° (measured clockwise from the vertical) Tutorial Supporting Materials Physical Constants Submit Answer